弹簧

The analytic results of spring elongation and vibration meter illustrate that flexible steel net form function of rock gabion after flexible steel net block debris.

弹簧变化及震动计变化分析结果显示，柔性拦截网在拦阻土砂后将产生自重形成透水石笼之功能，有效降低下波土石之冲击力。

The company is the specialized production gating hardware enterprise, is mainly engaged in the research and development and the production of spring, door closer and so on.

该是专业生产门控五金的企业，主要从事地弹簧、闭门器等门控产品的研发和生产。

Domestic micro-hardness, the microscope, the volume of block, needle gauge, thread gauge, needle Domestic Regulation precision granite platform, Scale Block, spring testing machine

国产显微硬度计、显微镜、量块、针规、螺纹量规、针规★国产精密花岗石平台、量表座、弹簧试验机

Considering this and comparative analysis, orthogonal list is used to storage coefficient matrix, and Improving Gaussian Elimination Method is used to numerically calculate dynamical equation. Therefore, nodes positions and the real-time moving states of model can be obtained in this way.

此外，本文分析了用于柔性体建模的几何方法、物理方法后，将较为可行的基于弹性理论的弹簧-质点模型引用到充气膜结构的充气过程模拟中，从而可以有效的模拟三维充气膜结构。

The form of its locomotion is: first, drive shaft inconjunction with the knife rest going down vertically in a certaindistance, then the magnetic stepping motor works, then the gearwheel group revolving with the shaft and the knife rest. Afterrevolving a circle, the air pressure vat decompresses, then, theshaft and the knife rest resets in the result of the spring.

其运动形式是：通过气压缸将传动轴和刀架打下一个固定距离，然后步进电机开始工作，通过带轮组带动传动轴和刀架作旋转运动，旋转360度后气压缸开始减压，复位弹簧使主轴和刀架复位。

The results indicate that two kinds of isolation devices can control the reactions of geodesic latticed shell effectively.

研究结果表明：两种隔震装置均有效地控制了短程线型网壳结构的支座反力，弹簧阻尼支座还明显地减少了隔震支座的水平位移。

B Through theoretical and experimental studies, the paper investigats the relationships between hammer geometer and stress waveform generated by the hammer. After the mechanical meanings of linear model used by others are demonstrated, a simple expression of rigidity of an equivalent spring for direct impact between a hammer and a rod is obtained. Based on the above work, a mathematical model and numerical method for the impact of the hammer with progressively changing cross-section on the rod are presented.

2应用理论分析和实验研究相结合的方法，探讨了冲击应力波波形和冲锤形状尺寸之间的关系；阐明了冲锤与杆撞击局部变形的线性模型的物理意义，继而分析讨论了冲锤端头曲率半径与撞击弹簧刚度的关系；在此基础上，提出了连续变截面冲锤与杆撞击的数学模型和计算方法。

Based on the sectional shield tunnels of metro in China, mechanical behavior of segment structure of shield tunnel under the different erection methods has been studied with geometric proportion of 1:12 through the simulated model tests of 3D 'ground-shield tunnel' in which joint effects of segments and mutual action effects between segments and ground are considered.

以我国城市地铁区间盾构隧道为对象，采用几何比 1/12、同时考虑盾构隧道管片接头效应和管片与土体相互作用效应，用三维土-盾构隧道相似模型试验对盾构隧道管片结构在不同拼装方式下的力学行为进行了研究，并将研究结果与梁-弹簧模型的理论分析结果进行了比较，得出的结论可为盾构隧道的设计提供参考。

Key words: zhuan K6 type bogie; aluminium alloy gondola car; dynamics test; dynamics performance

试验结果还表明，降低转向架减振系统的弹簧刚度对降低车辆的轮重减载率是有益的。

The spring constant, the mass, the gravitational acceleration and the amplitude of the oscillation can be changed within certain limits.

弹簧的劲度系数、质量、重力加速度和振幅可以在一定限度内被改变。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。