『壹』 lead throughs 機械中什麼意思
鉛名車貫
望學習進步,事業順心。不明白的可以繼續問哦!(*^__^*)
『貳』 在機械元件圖紙上4-M3 THROUGH是什麼意思
4是指個數,M是指直徑,3指3毫米
機械制圖是用圖樣確切表示機械的結構形狀、尺寸大小、工作原理和技術要求的學科。圖樣由圖形、符號、文字和數字等組成,是表達設計意圖和製造要求以及交流經驗的技術文件,常被稱為工程界的語言。另外機械制圖也是大多高等院校機械類及相關專業開設的一門基本必修課程之一。
『叄』 機械制圖中的英文「thru」是什麼意思
貫穿的意思,
『肆』 機械圖紙D&T1/8''B.S.P代表什麼意思
具體圖紙上傳看看,結合圖紙更容易理解!D的意思應該是drill(鑽)縮寫,T的意思應該是through(通過、透過),D&T綜合意思就是「鑽通或鑽透「的意思。
BSP是英制管螺紋總代號(全稱British Standard Pipe),八分之一寸的錐或管螺紋!
國內相當於圓柱管螺紋G1/8"或圓錐管螺紋ZG1/8",具體是錐還是圓得根據裝配需求仔細的確認。
若有用忘採納!
『伍』 機械專業英語翻譯成中文(急)
3.1.2
Friction
3.1.2
磨擦
Whenever
there
is
a
relative
motion
between
two
touching
surfaces,
there
is
a
resistance
to
this
motion
called
friction.
當兩個接觸的表面之間存在
相對運動
時,對這一運動就有一種稱為磨擦的阻力。The
mechanics
of
friction
are
complex.
摩擦的機理很復雜。Although
the
fundamentals
of
the
phenomenon
have
been
given
much
study,
very
little
that
is
known
would
facilitate
formulation
of
the
exact
functional
relationship
between
friction
and
the
other
process
variables
.
雖然這一現象的基本原理已由很多研究所提供,但已知很少有助於在磨擦和其他工藝變數之間形成准確的
函數關系
。The
most
common
simplifying
assumptions
made
with
regard
to
friction
stress
(J)
between
the
workpiece
and
the
tool
are
the
following
:
關於工件和工具之間的磨擦應力(J)所做的最常用的簡化假設如下:
1.
Coulomb
Friction.
It
is
assumed
that
the
shear
stress
J
is
proportional
to
the
pressure
p
between
the
workpiece
and
the
die.
Then
J
=
μp,
where
the
proportionality
factor
μ
is
called
the
Coulomb
coefficient
of
friction.
1.
庫倫
磨擦。它假設
剪切應力
J與工件和模具之間的壓力p成正比。於是J=μp,式中的
比例因子
μ被稱為庫倫磨擦系數
2.
Constant
friction.
It
is
assumed
that
the
shear
stress
is
proportional
to
the
strength
of
the
workpiece
material.
Then
τ
=
m/√3,
where
the
proportionality
factor
m
is
called
the
shear
factor,
with
0
<
m
<
1.
The
factors
μ
and
m
are
assumed
constant
for
a
given
die,
workpiece
and
lubricant.
2.
恆定的磨擦。它假設剪切應力正比於工件材料的強度。於是,T=m/√3,式中的比例因子m被稱為剪切因子,0
<
m
<
1。因子μ和m對於給定的模具、工件和潤滑劑而言都被假設為常數。
3.
Hydrodynamic,
Hydrostatic,
and
Thick
Film
Lubrication.
When
a
lubricant
film
separates
the
workpiece
from
contact
with
the
die,
then
hydrodynamic
or
hydrostatic
film
lubrication
prevails
together
with
its
special
laws
of
shear
within
the
lubricant
medium.
Sometimes
high-
viscosity
lubricants
adhere
to
the
workpiece
to
form
similarly
thick
film
separation
of
the
workpiece
from
the
tool.
Film
lubrication
may
separate
the
workpiece
from
the
die
on
the
entry
side
to
a
smaller
or
larger
extent.
At
the
extreme
(Sec.
7),
the
entire
workpiece
is
separated
from
the
die
by
this
film
of
the
lubricant.
3.
流體動力潤滑、靜壓潤滑和厚油膜潤滑。當一層潤滑劑膜將工件與接觸的模具隔離時,那麼流體動力的或靜壓的油膜潤滑,以及其在潤滑劑介質中特殊的剪切定律就會占上風。有時,高粘度潤滑劑黏結到工件上,形成工件與工具類似厚油膜的隔離。油膜潤滑可以在入口側將工件與模具以較小或較大的程度隔離。在極端情況下(第7節),整個工件就被此潤滑劑膜與模具隔離開來。
『陸』 THRU在機械制圖里是什麼意思
THRU表示通的意思,如通孔、通槽。
通孔:Plating Through Hole 簡稱 PTH,這是最常見到的一種,你只要把PCB拿起版來對著燈光,權可以看到亮光的孔就是「通孔」。這也是最簡單的一種孔,因為製作的時候只要使用鑽頭或雷射直接把電路板做全鑽孔就可以了,費用也就相對較便宜。可是相對的,有些電路層並不需要連接這些通孔,比如說我們有一棟六層樓的房子,我買了它的三樓跟四樓,我想要在內部設計一個樓梯只連接三樓跟四樓之間就可以,對我來說四樓的空間無形中就被原本的一樓連接到六樓的樓梯給多用掉了一些空間。所以通孔雖然便宜,但有時候會多用掉一些PCB的空間。
『柒』 through和go through的區別
through和go through的區別
(1)through 和 go through 表示「通過(某地、議案等);用完」時可互換使用。
如: The man was so fat that he couldn』t get/go through the door.那人胖得連那扇門都過不去。
The plan for this term will have to get/go through the leading group of the school.本學期計劃得經校領導班子通過。
I have got/gone through three pairs of shoes in a month.這一個月內我穿壞了三雙鞋。
(2)through 和 go through又各有其意義:
through:通過考試;接通電話
I got through everything except English .除英語外我別的都及格了。
I can』t through to Beijing. The line is busy.我打不通北京的電話,占線。
go through:檢查;看一遍;經歷(困難,痛苦)
I went through my homework to make sure that nothing had been missed.
我將作業檢查了一遍,以確定什麼都沒有漏掉。
Go through the text from the beginning .把課文從頭看一遍。
She must have gone through a lot.她一定吃了不少苦。
『捌』 機械圖紙33.00thr是什麼意思
thr多數指英文單詞through,機械上理解為貫穿的意思。
你看一下33.00是不是孔一類的標注。
供參考
『玖』 across和through有什麼區別goacross和g
across,cross是橫過的意思
across是介詞,通常在用go,run,swim.等搭配
cross是動詞,通常可以直接放在句子中
through是穿過
跟across一樣介詞,通常在用go,run,swim.等搭配
through與cross的不同在於方向
through是直過cross是橫過 例:
I went across the road = I cross the road
我橫過馬路(經斑馬線)
The car went through the road
汽車經過馬路(沿著馬路)