By analyzing capability and characteristic of tyres, this paper introduce some methods of reasonable selection and usage of tyres of mining vehicle equipment, so that improve its service life.

通过分析轮胎的性能特点，介绍了矿山无轨设备轮胎的合理选择方法，从而达到提高轮胎使用寿命的目的。

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Much thought has gone into the selection of a wide range of materials, not usually characteristic of our work.

我们对广泛材料的选择进行深思熟虑，不同于通常的工作特点。

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Least square method of polynomial or the method based on the given function are used to fit pump characteristic curve in pump selection or operation.

在水泵的选型或运行中，通常采用多项式的最小二乘法或根据假设的函数关系来拟合水泵性能曲线。

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Sexual selection emphasises the development of characteristics that demonstrate in a way that cannot be faked just how fit that characteristic's possessor is to father (or mother) another individual's offspring.

ECONOMIST: Come up and see my etchings