外文翻译--机构和机器原理

英文原文 of a is to or to as of of a of be as of a 1、 in in 2、 a of an is a of 3、 in a or A is a of or in in a to to If of is of to a of to to is a If of is of to a of to to a is an A or is a is a of or a to an A of or by as or or to or or at if at if no In a a be to as in in a of is is to or is to or to by or in or is a a an is on of in a is on a on a of or is in of we in it is to of a in in of is to or a to of or a is of of on of by in of a so as as so (as in in to In is a to to a of of by a of of is In on to so On is an to an In is a an to a is a s is of is In on of is We a of is of as of of in is as is in 60 to As an in to be to is or as to f in do is of or is to of is in as is in on be “is to It is in in in to a or is or is or of is to In to or in to to is In is in in to on to to do In as a of is A it to is a in If a of a if s We be be to is is of to on to in is In a is on is is is is a in on In to It is in a is be it of is of - in in Is in on an to A in is is is of at of is to is so is so on is of by or is or as as by of 1. of 2. to be to in is is is to up as 1. is of (of is . of is in is as a 2. is to is Of so on or of so is or is of by Is in in or be y=f(x), a is a to in to in xoxto to x to y=f(x) In in is x y to an x in in to to to in by y=f(x) is of in in It in in In on a to to to be in a If is to be is it A is or In be a in in In in a of in to is or A a a is is in in a a in a on to a is is on in to to in 中文译文 机构和机器原理 机构的功用是作为机械作用的一个部分从一个刚体到另一个刚体传送即传递运动。 一般能用作机构基本零件的机械装置有三种类型： 1齿轮装置。那是在回转轴之间进行接触传动的啮合构件。 2凸轮装置。把输入构件的均匀运动转换成输出构件的非均匀运动的装置。 3平面机构和空间机构也是能使一个点或一个刚体产生机械运动的有用装置。 运动链是一个构件系统装置即若干个刚体，它们或者彼此铰接或者互相接触，方式上是允许它们彼 此间产生相对运动。如果构件中的某一构件被固定而使任何其他一个构件运动到新的位置将会引起其他各个构件也运动到确定的预期的位置上的话，该系统装置就是一个可约束的运动链。如果构件中的某一构件仍保持固定而使任一运动到达一新的位置而不会使其他各个构件运动到一个确定的预期的位置上的话，则该系统装置是一个非约束运动链。 机构或连杆构件是一个可约束的传动链而且是一个从输入到输出以传递运动和（或）力为目的的机械装置。连杆机构是由通常被认为是刚体构件或杆组成的，它们是以销轴铰接的，例如用柱销（圆形的）或棱柱体销轴铰接，以便成形开式或闭式（回环式）的运动链。这样的运动链在至少有一个构件被固定的条件下：（ 1）如果至少有两个构件能保持运动，就变为机构，（ 2）如果没有一个构件能够运动，则就成为结构。换句话说，机构是允许其“刚性构件”之间相对运动，而结构则不能。由于连杆机构做成一简单机构而且能设定实现复杂的任务，例如非线性运动和力的传递运动。它们在机构学研究中将受到更多的关注。 机构被用于许多许多的机器和装置中。最简单的封闭式的连杆机构就是四杆机构，四杆机构有三个运动构件（加上一个固定构件）并且有四个销轴。连接动力源