杆

In chapter four, in order to study the micro-process of the compress of the high speed oil-free twin screw compressor, a mathematical model is built based on the conservation of mass and the first principle of thermodynamics.

第四章为了深入研究无油双螺杆压缩机的微观工作过程，以质量守恒定律和热力学第一定律为基础，建立了双螺杆工作过程的数学模型。

The new line features four models - Coronado, Monterey, Sonoma and Del Mar - characterized by blade as well as mallet-style heads and two different neck styles.

新产品具有4种型号款式-Coronado， Monterey， Sonoma 和 Del Mar，它们的特点是拥有槌型的杆头搭配不同杆颈。

But the working condition of the screw pump is so rigorous that the ordinary rubber could not fulfill the requirement of the terrible working condition such as high temperature,high pressure,long working hours,corrodent,seasonal stress and so on.

但采油螺杆泵工作条件十分苛刻，如高温、高压、工作时间长、磨蚀性介质、周期性挤压力等等，传统的定子橡胶已临近其性能极限。本文主要讨论纳米CaCO3和PVC树脂对丁腈橡胶的改性效果，综合提高丁腈橡胶的强度、耐油、耐磨等性能，通过改性使得丁腈橡胶能够满足采油螺杆泵定子材料的性能要求。

Based on the wave equation of longitudinal vibration of variable cross-session rod, the frequency equation and parameter formula of cosine horn are educed, the cosine horn with same frequency and different area ratio is designed by using Matlab language.

根据变截面杆纵向振动的波动方程，推导了余弦形变幅杆的频率方程和重要参数的计算公式。

Rough checks, and contact to the body with the crosse or body, are not allowed.

粗暴的击杆checking，用球杆或身体冲撞其他队员是比赛所不允许的。

A player may gain possession of the ball by dislodging it from an opponent's crosse with a check.

球员也可以用击杆这一方法让球从对手的球杆里弹出由此获得控球权。

Crosse: The equipment used to throw, catch, check and carry the ball.

球杆：用来传球、接球、击杆和持球的设备。

No player may reach across an opponent's body to check the handle of a crosse when she is even with or behind that opponent.

即使当一名球员与对方球员相平或在其后面时，她也不可以越过对方球员去击打其球杆的杆柄处。

Taking the minimization of the tooth crown of a worm wheel and the maximization of transmission efficiency and the distance from the center as objectives,we establish the mathematical model for the multi-objective optimal design of worm transmission on the condition that the worm wheel and the worm transmission meet the requirements for load,strength and others.

以蜗轮齿冠体积最小、传动效率最高和中心距最小为目标，在保证蜗轮和蜗杆满足承载、强度及其它要求的前提下建立蜗杆传动多目标优化设计的数学模型。

Break Off - the first shot of the match, played with the cue ball in the 'D

开球– 比赛中开出的第一杆，此杆要击打开球区中的主球

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。