A zero friction coefficient means that no shear forces will develop and the contact surfaces are free to slide.

零摩擦系数意味着没有剪力发生，且接触面自由滑动。

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Interchain interactions. The polymer chains can be free to slide past one another (thermo-plastic) or they can be connected to each other with crosslinks (thermoset or elastomer).

链间的相互作用：聚合物的分子链可以自由地彼此滑动(热可塑性)或通过交键互相连接(热固性或弹性)。

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Currency analysts say the dollar's slide has room to run now that it has broken free of recent trading ranges.

货币分析师们说，鉴于美元已经跌破了近期的交易区间，它仍然具有下行空间。

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And 12 minutes later they were level after Gareth Bale set Blackpool's Vaughan free on the left to square for Bellamy to slide home his fifth goal in six games.

BBC: Finland 2-1 Wales