车轮

Technology and management are two wheels which propel the progress of society, and the development of technology and the innovation of management complement each other.

科技与管理是推动社会进步的两大车轮，科技的进步与管理的创新是相辅相成的。

Professional cyclists look at a racecourse and make an educated guess as to what kind of wheels should be used.

职业自行车手们审视竞赛路线，并且请一位识文断字的人推断应该使用哪种车轮。

In this paper, a model forwheel/rail with arbitrary profiles contacting in an arbitrary point is built to calculate contact area and contact surface stresses. Then bytakingthe calculated surface stresses as applied load, the stresses inside the railhead are calculated through the three dimensional elastic-plastic finite element method.

建立了一个任意形状钢轨和车轮在任意点接触时，接触面形状和接触面力的计算模型，然后把计算出的接触面力作为外载施加到三维弹塑性有限元模型中，进行轨头内部应力的计算，从而构成一个完整的计算方法。

Considering the real wheel/rail geometry and boundary condition, the distribution of elastic-plastic stress in the rail-joint, the effect of the inclusion and crack in the rail surface on the distribution of elastic-plastic stress in railhead are analyzed by using software ANSYS.

本文以大型有限元软件ANSYS为分析工具，同时考虑车轮和钢轨真实的几何形状及边界条件，分析了钢轨接头位置弹塑性应力场、钢轨表面点状缺陷和条纹状钢轨表面缺陷对钢轨接触应力场的影响。

A hinged device that fits into a notch of a ratchet to move a wheel forward or prevent it from moving backward.

推动车轮向前或阻止向后移动的嵌在棘齿凹巢的铰链装置。

Lyall's monowheel is unusual because it does not use the rider's weight to provide the reaction to the engine's thrust on the wheel.

lyall的monowheel是不寻常，因为它并没有使用骑士的重量，以提供反应发动机的推力对车轮。

But- it's not quite as daft as it appears; the use of a propellor means that the wheel is always pulled/pushed forwards, without relying on the weight of the rider and engine to provide reaction.

但-它的不太作为杜达富，因为它出现的；使用一种p ropellor，即车轮始终是拉/推高远期合约，而不必依赖的重量车手和引擎提供的反应。

More, they are reactionary, for they try to roll back the wheel of history.

此，他们甚至是反动的，因为他们力图使历史的车轮倒转。

Nay more, they are reactionary, for they try to roll back the wheel of history.

不仅如此，他们甚至是反动的，因为他们力图使历史的车轮倒转。

It was stripped down which has 105 2x9 groupset, lightweight wheels and the same nice rack with rear light.

它被剥离下来，其中有105 2x9 groupset ，轻质车轮和同尼斯机架，车尾灯。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。