杆

In the top drawing the ejector pin is in the rear position, and it is held back by push-back pins.

在上面的图里，顶杆是在后面的位置，由回程杆带回。

This paper is a part of research on a development drill pipe power tongs in well.

论文首先总揽了国内外钻杆动力钳发展的现状，并权衡了各种钻杆动力钳的设计理论和结构，结合现有生产技术，运用利用参数化设计方法进行系列产品开发，此方法缩短了产品开发周期，并可以直观设计结果，检验整体结构设计的正确性。

In order to know the cause of the accidents, an investigation is taken and the failure analysis is carried out for one broken drill pipe.

为了搞清钻杆断裂原因，对空气钻井过程中钻具断裂事故进行了调查研究，并对一根断裂钻杆进行了失效分析。

Chances are the clubs will be well maintained; they're hard to damage (unless you're buying from a duffer with a temper).

通常球杆都保养的很好；球杆不太容易损坏（除非你的卖家是个脾气暴躁的家伙）。

In order to deal with the irregular cross section of the milling cutter, the cutter effective cross section coefficient and effective radius coefficient are introduced to determine the inherent frequency of cutters for various cantilever lengths and radii.

针对铣刀刀杆截面形状不规则的特点，引入截面系数和有效半径系数的概念，提出了不同悬臂长度和半径的铣刀刀杆固有频率计算方法。

According to elastodynamics theory, the dynamic model of machining the slender rod is founded by axial turn -milling, the calculation formula of the natural frequencies and the main vibration mode are ob- tained, and the dynamic response of the slender rod forced vibration is studied under simple harmonic excitation.

根据弹性体动力学理论，建立轴向车铣细长杆的动力学模型，得到了各阶固有频率和主振型的计算公式，分析了在简谐激励下细长杆强迫振动的动力学响应。

The structure and the performance of the single screw extruder of electromagnetism dynamic are presented.

简要介绍了电磁动态单螺杆挤出机的结构性能，分析了螺杆在振动力场作用下的轴向受力状况。

Nowadays the standard on the experiments of materials characteristics of GFRP bars is incomplete;the data about the electrometric method on the elastic modulus test of GFRP bars is especially scarce.

目前GFRP杆件材性测试相关规范还不完备，特别是采用电测法测试GFRP杆件弹性模量缺少相关资料。为测量梳齿式微机械加速度计敏感元件的机械参数，提出一种静态电测法。

According to the empirical formula to determine of the equipment structu- re size, and the various components size.

对机械式单斗挖掘机的结构进行了介绍，并斗杆的结构进行了分析，根据经验公式确定了斗杆的结构尺寸。

The shell is divided into orthogonal or oblique crossing girder systems, which make up a space rigid frame structure, then an analysis is made of the endogen force of the shell structure based on the curved lever space rigid frame structure.

该方法通过将壳体结构离散成相互垂直或斜交的曲杆梁系组成的空间刚架结构，进而分析曲杆空间刚架结构的内力，达到壳体内力分析的目的。

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。