青浦区高级中学-生物教研组工作总结

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英语ppt演讲稿(精选多篇)


吉他唱歌then,i am going to share the
experience of learning guitar and singing
be honest ,i am not good at either
of them, i just like them. singing can be
used to relieve my fatigues and can help
me improve my accent. practicing guitar
making me happy when i am sad. my
hobbies refer to
music, it said that singing along with
music or dancing to rhythm can make
people clever. i am always singing at home
to share each other’s joys and sorrow in
our life and to learn many songs.
泼水节it goes without saying that
there are many different kinds of
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activitiesand they can not only broaden our
minds but also add more fun to our
example , thailand water splashing
festival ,it represents thailand thai new
year, the water-splashing festival is in
mid-april and lasts three to five days.
water is the most precious thing to the tai
people,they believe the holy water make
you get rid of bad luck,the tai people’s
wish for your good fortune and happiness
sincerely.
印尼美食节in the indonesian food
festival , we satisfy our taste buds,also, we
feastedour eyes on the he traditional
dances, songs and music.
风雅中华and the “feng ya zhong
hua” is china traditional
culturalquiz. we had a chance that
enabled our to presen our knowledge and
practice ourcooperative learning skills.
五缘水乡 it is a wetland
we can see manyblack swans . it is -----------------------------------------------最 新财经经济资料---------------- 感谢阅读-----------------------------------

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surrounded by verdant trees on
in its the lakeside and intoxicates tens
ofthousands of people arms with their
wonderful charm and
its radiant and enchanting scenery in
lake can learn much during your
travel about the geography, biology, and
history of the places you visit. 小结no
matter how well educated you are, there is
always a lot for you to learn through
travelling. the knowledge acquired from
travel, as you will have found in your life,
is no less valuable than that from any
influential reference book.
to make a better city, planners aimed
at creating a city in which the insalubrious
environment and social structure would be
defeated by a reordering of physical and
social arrangements, so that all the citizens
could attain the benefits of beauty,
community, and democracy. in harvey’s
opinion, the better city should confront on
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the postmodernist challenge to political
economy, and deal with environmental
sustainable.
however i think green buildings could
make good cities, and also citizens will
have a best quality of life. according to the
world green building council’s definition,
“to significantly reduce or eliminate the
negative impact of buildings on the
environment and on the building occupants,
green building design and construction
practices address: sustainable site planning,
safeguarding water and water efficiency,
energy efficiency, conservation of
materials and resources, and indoor
environmental quality.”the green building,
which is sustainable in the built
environment, can reduce environmental
impact but also provide better buildings.
the technologies associated with green
buildings include:
-energy conservation
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-water conservation
-material selection
-use of renewable materials
-occupant health and indoor
environment quality
-site ecology
-recycling
the green building can be residential,
commercial, retail and industrial buildings.
for example, the green building uses
water-mining plant to recycle water on
toilet flushing, watering the garden, and
washing cars. the building also uses
phase-change materials for cooling,
automatic night-purge windows, wavy
concrete ceilings, which saves a lot of
money and become more sustainable.
the idea of green and healthy cities is
becoming more important nowadays. the
better city should be planed for health and
well-being by planners, and they will
mainly focus on service facilities,
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educations. the good city will also need to
be safe in community, and make
community more walkable, and has an
urban design with exquisite streetscape.
however the planner keeps developing new
ideas of how cities should be changed,
therefore the city will become more livable
and sustainable in the future.
reference:
susan s. fainstein, can we make the
cities we want? the urban movement
richard reed and sara j. wilkinson
green building-issues for the valuation
process, uiversity of melbourne
to make a better city, planners aimed
at creating a city in which the insalubrious
environment and social structure would be
defeated by a reordering of physical and
social arrangements, so that all the citizens
could attain the benefits of beauty,
community, and democracy. in harvey’s
opinion, the better city should confront on -----------------------------------------------最 新财经经济资料---------------- 感谢阅读-----------------------------------

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the postmodernist challenge to political
economy, and deal with environmental
sustainable.
however i think green buildings could
make good cities, and also citizens will
have a best quality of life. according to the
world green building council’s definition,
“to significantly reduce or eliminate the
negative impact of buildings on the
environment and on the building occupants,
green building design and construction
practices address: sustainable site planning,
safeguarding water and water efficiency,
energy efficiency, conservation of
materials and resources, and indoor
environmental quality.”the green building,
which is sustainable in the built
environment, can reduce environmental
impact but also provide better buildings.
the technologies associated with green
buildings include:
-energy conservation
---------------------------------------------- -最新财经经济资料---------------- 感谢阅读-----------------------------------

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-water conservation
-material selection
-use of renewable materials
-occupant health and indoor
environment quality
-site ecology
-recycling
the green building can be residential,
commercial, retail and industrial buildings.
for example, the green building uses
water-mining plant to recycle water on
toilet flushing, watering the garden, and
washing cars. the building also uses
phase-change materials for cooling,
automatic night-purge windows, wavy
concrete ceilings, which saves a lot of
money and become more sustainable.
the idea of green and healthy cities is
becoming more important nowadays. the
better city should be planed for health and
well-being by planners, and they will
mainly focus on service facilities,
-------------------------- ---------------------最新财经经济资料---------------- 感谢阅读-----------------------------------

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educations. the good city will also need to
be safe in community, and make
community more walkable, and has an
urban design with exquisite streetscape.
however the planner keeps developing new
ideas of how cities should be changed,
therefore the city will become more livable
and sustainable in the future.
reference:
susan s. fainstein, can we make the
cities we want? the urban movement
richard reed and sara j. wilkinson
green building-issues for the valuation
process, uiversity of melbourne
1、lathe
2、value of two yuan of the third
series of the rmb ——the turner
3、a lathe is a machine tool which
rotates the workpiece on its axis to
perform various operations such as
cutting, sanding, knurling , drilling, or
deformation with tools that are applied to
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the workpiece to create an object which
has symmetry about an axis of rotation.
4、history
the lathe is an ancient tool, dating at
least to ancient egypt and known and
used in assyria and ancient greece .
the origin of turning dates to around
1300 bc when the ancient egyptians
first developed a two-person lathe.
ancient rome improved the egyptian design
with the addition of a turning bow. in the
middle ages a pedal replaced
hand-operated turning, the system today
is called the “spring pole” lathe. spring
pole lathes were in common use into the
early 20th century.
during the industrial revolution,
mechanized power generated by water
wheels or steam engines was transmitted
to the lathe via line shafting, between the
late 19th and mid-20th centuries,
individual electric motors at each lathe
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replaced line shafting as the power source.
beginning in the 1950s, servomechanism
were applied to the control of lathes and
other machine tools via numerical control,
today manually controlled and cnc lathes
coexist in the manufacturing industries .
5、description：parts
explanation of the standard
components of most lathes:
? bed床身: usually made of cast iron.
provides a heavy rigid frame on which all
the main components are mounted.
? ways床身导轨: inner and outer
guide rails that are precision machined
parallel to assure accuracy of movement.
? headstock床头箱，主轴箱:
mounted in a fixed position on the inner
ways, usually at the left end. using a chuck,
it rotates the work.
? gearbox ①齿轮箱②变速器:
inside the headstock, providing multiple
speeds with
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a geometric ratio by moving levers.
? spindle心轴，主轴: hole through the
headstock to which bar stock can be fed,
which allows shafts that are up to 2 times
the length between lathe centers to be
worked on one end at a time.
? chuck卡盘: 3-jaw or 4-jaw to
clamp part being machined.
? chuck: allows the mounting of
difficult workpieces that are not round,
square or triangular.
? tailstock尾架: fits on the inner
ways of the bed and can slide towards any
position the headstock to fit the length of
the work piece. an optional taper turning
attachment would be mounted to it.
? tailstock quill尾架套管: has a
morse taper to hold a lathe center, drill bit
or other tool.
? carriage托架，滑动架: moves on
the outer ways. used for mounting and
moving most the cutting tools.
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? cross slide横刀架，横拖板，横溜
板: mounted on the traverse slide of the
carriage, and uses a handwheel to feed
tools into the workpiece.
? tool post刀架，刀座: to mount tool
holders in which the cutting bits are
clamped. ? compound rest复式刀架:
mounted to the cross slide, it pivots around
the tool post.
? apron床鞍: attached to the front of
the carriage, it has the mechanism and
controls for moving the carriage and cross
slide.
? feed rod进给杆: has a keyway, with
two reversing pinion gears, either of which
can be meshed with the mating bevel gear
to forward or reverse the carriage using a
clutch.
? lead screw丝杠: for cutting threads.
? split nut开合螺母: when closed
around the lead screw, the carriage is
driven along by direct drive without using
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a clutch.
? quick change gearbox快换齿轮箱:
controls the movement of the carriage
using levers.
? steady rest固定中心架: clamped to
the lathe ways, it uses adjustable fingers to
contact the workpiece and align it. can be
used in place of tailstock or in the middle
to support long or unstable parts being
machined.
? follow rest跟刀架: bolted to the
lathe carriage, it uses adjustable fingers to
bear against the workpiece opposite the
cutting tool to prevent deflection.
6~9、description：accessories
three-jaw chuck : self-centering
three- jaw chuck and key with one jaw
removed and inverted showing the teeth
that engage in the scroll plate. the scroll
plate is rotated within the chuck body by
the key, the scroll engages the teeth on the
underside of the jaws which moves the
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three jaws in unison, to tighten or release
the workpiece.
four-jaw chuck :independent four-jaw
chuck, also known as a universal chuck,
with the jaws independently set. the key is
used to adjust each jaw separately. collet
弹性夹头: a collet is a holding
device—specifically, a subtype of
chuck—that forms a collar around the
object to be held and exerts a strong
clamping force on the object when it is
tightened, usually by means of a tapered
outer collar. it may be used to hold a
workpiece or a tool.
faceplate花盘: a lathe faceplate is the
basic workholding accessory for a wood or
metal turning lathe. it is a circular metal
plate which fixes to the end of the lathe
spindle. the workpiece is then clamped to
the faceplate, typically using t-nuts in slots
in the faceplate, or less commonly
threaded holes in the faceplate itself.
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dead center死顶尖: dead center
mounted in the spindle of a lathe and being
used to support a workpiece being driven
by a carrier setup live center活顶尖:a live
center or revolving center is constructed so
that the 60° center runs in its own bearings
and is used at the non-driven or tailstock
end of a machine. it allows higher turning
speeds without the need for separate
lubrication , and also greater clamping
pressures.
lathe carrier车床鸡心夹头: a lathe
dog, also known as a lathe carrier, is a
device that clamps around the workpiece
and allows the rotary motion of the
machine’s spindle to be transmitted to the
workpiece.
mandrel心轴: an object used to shape
machined work.
10、application
lathes are used in woodturning,
metalworking, metal spinning, and
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glass-working. lathes can be used to shape
pottery, the best-known design being the
potter’s wheel陶车. most suitably
equipped metalworking lathes can also be
used to produce most solids of revolution,
plane surfaces and screw threads or helices.
ornamental lathes can produce
three- dimensional solidsof incredible
complexity
11、examples of work produced from
a lathe
12、thank you!
i`m very happy to have this opptunity
to give you a ,my topic is lathe.
i know many of you are familiar with
this topic
can you hear me clearly?
i think ti would be best to start out by
looking at the picture on the screen
i would like to talk about first is the
definition of the lathe
question
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that is all,thank you very much
do you have any questions? please
show me your hand.
who else?
i think we have time for just one more
question
traditional martial arts are part of
china’s outstanding culture and it contains
the spirit of the chinesenation-specific
values, way of thinking, imagination,
which embodies the chinese nation’s
vitality andcreativity, and intelligence are
the crystallization of the chinese people,
but also a treasure for allmankind
civilization.
the origin of chinese martial arts 中
国武术的起源
wushu in china goes back to ancient
times, originating from productive
laboring of the ancient ancestry.
in the primitive society, people had to
survive by gathering in groups. they lived
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on hunting with rocks and sticks. hitting
with their hands, kicking with their feet
and cutting, chopping or stabbing with
simple weapons, they performed all kinds
of movements, which displayed certain
skills of defense or attacking. these
performances made up the substantial
background of wushu.
in the clan society, there often
occurred battles between the tribes. armed
forces became the means of plundering.
bows, arrows, casting stones and other
rocky items appeared as weapons, being
improved gradually according to the needs
of fight. when having a rest, especially
when celebrating their triumphs, people
danced to the imitations of defending and
attacking movements, stabbing, blowing
and kicking. after prolonged accumulation,
the experiences began to be raised to the
level of consciousness, hence wushu came
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type of gongfu中国武术的分类
chinese martial arts consist of a
number of fighting styles that were
developed over the centuries. those
fighting styles can be classified according
to common themes that are identified as
“families” , “sects” or “schools” . styles
of chinese martial arts also can be
categorized as the northern style and the
southern style according to the
geographical regions divided by the
huanghe river.
chinese love for martial arts中国人的
武侠情缘
chinese love for martial arts can be
reflected in many martial arts novels and
all kinds of film and television works.
the works of jin yong, gu long, liang
yusheng is representative of martial arts
novels. recent years, a lot of martial arts
writers appear on the mainland. for
example, feng ge, the writer ofkun lunand
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cang yue, the writer oftingxuelou series,
who are the representativeof new martial
arts writers. it is said that “outstanding
martial arts novelist to write the world
faces; and astute readers read out the
vicissitudes of life and attitudes of
human.” we may not be the astute readers,
but we can at least enjoy martial in our
own way. superb and legendary martial
arts, peculiar experience of a survivor, a
love story full of pathos attract many
readers.
martial arts film and television works
are emerging.
中国武术精神 the spirit of the
chinese martial arts
1个人的武德修养 individual
cultivation of martial arts ethics.
the practicers should respect teachers,
filial piety, and righteousness and should
not belligerent.
2 collective mor ality.集体的道德观
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念。
the practicers should help the poor
and the weak, solve villainous crimes and
righteous.
3爱国主义的精神。the spirit of
patriotism
all the practicers must loyalty to the
nation. the goal they practice martial arts is
to protect the country and the people.
武术对世界的影响
chinese gongfu is a very important
and unique form of chinese culture. it can
be viewed as both a popular and a classical
art. today it is very common and
widespread. chinese gongfu possesses an
important and extensive cross-cultural跨
文化的 significance. the popularity of
chinese gongfu, including taijiquan,
qigong, etc. is not limited to china but has
become a worldwide phenomenon. we can
also enjoy some kongfu movies directed
by foreign directors at times!
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in the future, we hope more people
could interest in our chinese culture and
have a depth knowledge of chinese
kongfu.


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