中杆

Through the dynamic simulation test of the indoor autoclave, the law of the influence of oxygen content, drill fluid temperature, drill fluid flow velocity and the salt concentration of the drill fluid on the oxygen corrosion rate of the S135 drill pipe steel was studied separately in order to investigate the relatio...

为研究腐蚀因素与腐蚀速率的关系，通过室内高压釜动态模拟实验，分别研究了钻井液中含氧量、钻井液温度、钻井液流速和钻井液盐浓度对S135钻杆钢的氧腐蚀速率影响规律。

The optimal design of a six-bar linkage to be used in the main driving mechanism of a gear planer is discussed and treated as a multi-objective problem.

本文首先讨论了在插齿机主传动机构中使用的六杆机构的优化设计问题，并建立了一个多目标数学模型。

Thumb up in the human civilization that a person or thing on the excellent performance of the affirmative; thumb is to balance human use of computer support points, but also human beings of heaven and earth to open cell phone joystick.

竖起的拇指，在人类文明中表示着对人或事物的优秀表现的肯定；拇指，是人类使用计算机的平衡支撑点，也是人类打开手机天地的控制杆。

And whenever he appears in any event with his hair all nicely coiffed, i find myself wondering if his stylist has had time to touch it up, or if he had sat rod-straight when he's on the way there so that his hair's not messed up.yong joon, i've this to say to you

无论何时他出现在任何一个场合，我都会去注意他修剪好的发型，我发现自己总是奇怪担心是否他的发型师有时间为她打点头发，或者是否他在行程中坐姿如杆才使得他的头发没有散乱。

Grassoline can be made from dozens, if not hundreds, of sources: from wood residues such as sawdust and construction debris, to agricultural residues such as cornstalks and wheat straw, to "energy crops"—fast-growing grasses and woody materials that are grown expressly to serve as feedstocks for grassoline.

Grassoline 可以从数十个，甚至数百木材剩余物，如木屑和建筑碎片中获得，以农业剩余物如秸杆和麦秸作为&能源作物&即快速增长的草和木质材料，这些材料可以作为grassoline的原料快速增长。

In addition, the dampers have been successfully endurance tested and are maintenance free.

此外，其阻尼杆部分已经成功地通过了耐久性测试并且在使用过程中无需任何维护。

Part two : Analyzed the program of dynamic signal matching, expounded the pile wave analysis program by the method of characteristics, characteristic connection detruding, the problem of initial value or edge value, piles calculating model and pile-soil system, indicated the lack of the traditional high strain dynamic signal matching program.

第二部分：对实测曲线拟合法进行分析，阐述了弹性体细长杆中纵波传播的特征线解，特征关系的推导，初值与边值问题，桩的计算模型，桩侧土模型，桩尖土模型，指出传统拟合分析程序的参数不够全面的缺点。

Positive displacement motor is a kind of the most widely used downhole drilling motors in oil and gas drilling .

螺杆钻具是油气钻井中应用最广泛的一种井下动力钻具。

There are many methods of drawing-in of lease rods and droppers in weaving plain and twill fabrics on Sakamoto looms. Each method has its own characteristics.

阪本自动织机在制织平纹斜纹织物时，穿绞杆和穿仃经片的方法是很多的，在各种穿法中亦各有自己的特性。

Plants like duckweeds float on the surface of still and slow-moving waters, while those with roots and flexible stems can stand in swift-flowing streams. Wetlands are full of vegetation that feeds everything from fish to people.

无论是水面上静止漂浮的浮萍还是缓慢流动的河水，有根的或在急流中得以灵活应变的职务杆茎，湿地丰富的植被喂养着包括从鱼类到人类的大量动物。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐