Based on the yarn slip tests carried out for nine kinds of fabrics available in the market, a general relationship between the yarn slipping force and the wearability of the fabrics is found.

本文通过对市售九种织物做纱线滑移试验，初步得出了纱线滑移力与织物耐磨性的一般关系。

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The results show that: 1. 70~80% rabbit hair that is worn off from the blended sweaters are broken, 2. the maximum slipping force and the breaking force of the rabbit hair are much smaller than that …

结果表明：（1）混纺兔毛针织物上兔毛掉毛的70～80%是由于纤维断裂所造成； （2）兔毛的滑脱力和断裂力远低于羊毛。 提出兔毛衫掉毛的主要原因是纤维强力低而易断裂的论点。

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The structural features of the developed 395DB clutch are briefly introduced, and the clutch′s torque capacity, temperature rise, slipping work and pedal force are reviewed.

简要介绍了设计的395DB离合器的结构特点，并对该离合器的传递扭矩、温升、滑磨功、踏板力进行了校核。

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Some of this is due to an ageing population and some to a rising share of that population in the labour force: the so-called participation rate has jumped a percentage point, to 40%, while slipping for the population as a whole.

ECONOMIST: Older workers and the recession