One such grouping divides mechanisms into planar, spherical, and spatial categories. All three groups have many things in common,the criterion which distinguishes the groups, however, is to be found in the characteristics of the motions of the links.

其中一种归类法是将机械原理分成平面、球面和空间三类。尽管这三类机构都有许多共同点,然而分类的区别却在于连杆运动的特性。

属类：产品说明书-机械产品说明-

Changes in the gain could occur if the length of the maser changed because of turbulent gas motions

气体的湍流运动使微波激射区的长度改变时，增益就可能发生改变。

属类：综合句库--

We must see to it that we solve these serious problems and don’t just go through the motions .

切实解决上述那些必须解决的严重问题，绝对不能走过场

属类：时事政治-邓小平选集-党的迫切任务

As peristalsis pushes food to the stomach, the lower esophageal sphincter opens and then closes to prevent reflux. Painful swallowing is usually caused by inflammation; other problems are caused by blockage or disorders affecting the motions of swallowing.

蠕动将食物推到胃，食道下端的下括约肌松弛，然后关闭以防止反流。吞咽困难通常由炎症引起，其它阻碍或失调引起的问题也会影响吞咽的动作。

属类：化学及生命科学-医学-生理与解剖

It is important in motions of eating, drinking, and swallowing, and its complex movements shape the sounds of speech.

舌在饮食和吞咽动作中有重要作用，其复杂的运动可帮助言语发声。

属类：化学及生命科学-医学-生理与解剖

The astronomer Kepler, whose work on the planetary motions is now a classic, is reported to have said of his book that “it may wait a century for a reader, as God has waited 6000 years for an observer.”

十六世纪德国天文学家开普勒关于行星运动的著作现已成为经典名著;但据说，当时他对该书曾讲过这样一句话，“这本书可能要等上一个世纪才有一个读者，就像上帝等了六千年才有了一个天文观察者一样。”

属类：文学表达-外国名著-WHAT IS A GREAT BOOK?

The compressibility of the chamber gases or feed line liquids allow for the existence of wave motions

室内气体或供应管道液体的可压缩性可以使波动现象存在。

属类：综合句库--

He took a final puff at the clipped stub, and ground it out in practiced motions of the lifeless hand

他把夹住的烟蒂吸了最后一口，然后用那只没生命的假手熟练地把他捻熄。

属类：综合句库--

He looked fixedly at Sikes, with his face altered by the motions which had mastered him

他定睛注视着赛克斯，主宰着他的感情竟使得他脸色大变。

属类：综合句库--

He later discovered that similar motions could be seen in smoke or dust particles suspended in air and other fluids. The idea that molecules of a fluid are constantly in motion is a key part of the kinetic theory of gases, developed by James Clerk Maxwell, Ludwig Boltzmann, and Rudolf Clausius (1822-1888)to explain heat phenomena.

他后来又发现广布在空气和其它流体的烟或尘中都可以看到类似的运动。这个观念是马克士威、波兹曼和克劳修斯(Rudolf Clausius,1822～1888)在阐明热现象时所提出的气体分子运动论的主要概念。

属类：自然科学-物理-

His countenance is erect, his body and limbs are well proportioned, all his motions are graceful, and his deportment is majestic

他面貌端庄，身躯四肢匀称，举止文雅，态度严肃。

属类：综合句库--

He also obtained similarity solutions for longitudinal and spherically symmetric motions

他也得出了关于纵向对称运动和球面对称运动的类似解。

属类：综合句库--

His gliding and curving motions are somewhat like those of the herring-gull, but the wings in gliding are carried stiff and straight, the tips of the long flight-feathers showing a slight upward curve.

它滑翔与转弯的动作看起来跟鲱鱼鸥相似，但在滑动的时候，翅膀会挺得直直的，那修长的尖端呈现出一种轻翘曲线。

属类：文学表达-外国散文-人与自然

To proceed with writhing motions .

蜿蜒而行以扭动的动作前进

属类：综合句库--

I didn’t really want to play a hard game of tennis with my son, so I went through the motions and let him win the first two sets

我并非真的想同我儿子打一场艰苦的网球赛，因此就敷衍了一下，让他赢了前两局。

属类：综合句库--

I don’t want to do this, but I think I’d better go through the motions .

我不想做这件事,但我认为还是装出做的样子较好。

属类：综合句库--

We may accelerate the motions of life, but we cannot seem to change the routes that are available to its goals.

我们也许可以加快生活的步伐，但似乎无法改变达到生活目的所必由之路。

属类：文学表达-外国名著-WHAT IS A GREAT BOOK?

I walk’d about on the shore, lifting up my hands, and my whole being, as I may say, wrapt up in the contemplation of my deliverance, making a thousand gestures and motions which I cannot describe

我在岸上狂乱地跑来跑去,高举双手,做出千百种古怪的姿势。

属类：文学表达-英语名著-鲁宾逊漂流记

Today young people learn variations of disco dancing so complex that it would take hundreds of hours of observation to articulate the motions

现在年轻人学各种各样复杂的迪斯科舞，可能要花几百小时观察，才能把这些动作连贯起来。

属类：综合句库--

In chess… the pieces have different and bizarre motions

象棋这门玩艺，各子都有各子的希奇古怪走法。

属类：综合句库--

Energy (variance)of the small-scale motions is not homogeneous

小尺度运动的能量(偏差)是不均匀的。

属类：综合句库--

A strong magnetic field in a resonant cavity is an ideal circumstance for initiating the spins and orbital motions of electrons and nuclei in solids

谐振腔中的强磁场是激发起固体中电子和原子核的自旋和轨道运动的理想环境。

属类：综合句库--

Most older filling stop motions consist of fork-like devices which feel for the presence of the filling yarn.

许多传统的纬停机构使用纬纱叉装置感知纬纱的存在。

属类：行业术语-纺织服装-

The twisting motions of various parts of the dummy′s body are studied, as are the various loads to which it is subjected.

研究假人身体的不同部分的扭曲动作，以及它承受到的各种负荷

属类：单位简介-汽车公司网站-关于Volvo

All his motions and evolutions expressed a dry, cautious, acuteness

一举一动都说明他为人刻薄、精明、小心翼翼。

属类：综合句库--

As to going home, shame opposed the best motions that offered to my thoughts; and it immediately occurr’d to me how I should be laugh’d at among the neighbours, and should be asham’d to see, not my father and mother only, but even every body else

一想到回家,羞耻之心使我归心顿消。我立即想到街坊邻居会怎样讥笑我;我自己也不仅羞见双亲,也羞见别人。

属类：文学表达-英语名著-鲁宾逊漂流记

The doctor was sure the girl wasn’t ill, but he went through the motions of examining her

医生确信那姑娘没病，但他还是装样子给她查了查。

属类：综合句库--

The motions of all particles can therefore be completely described by their radiap projections, or "shadows", on the surface of a sphere with properly chosen center.

因此,在一个球面上以某个选点为中心作径向投影,就能完全绘出所有的质点运动。

属类：产品说明书-机械产品说明-

Some catalogs provide data on motions , variability, duplicity, etc

有的星表还提供了运动，是否变光以及双星、聚星等等的资料。

属类：综合句库--

An impairment in the ability to control movements,characterized by spasmodic or repetitive motions or lack of coordination.

运动障碍限制运动能力的障碍，以痉挛或频繁重复的动作或缺乏协调性为特征

属类：综合句库--