For the common non-smooth contact namely corner problems in the more contacting bodies, more reasonable techniques are proposed by classification and real contact state of corners.

对于多块体常见的非光滑接触，即角点问题，将角点分类，并根据角点实际的接触状态分情况给出了更为合理的处理方法。

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If you use metal gaskets, smooth surface should be reduced, to reduce the contact area with the pads.

如果要用金属垫片，则应将光滑面缩小，使其与垫片的接触面积减小。

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A lower particle concentration in the liquid droplet results in a smooth de-pinning of the contact line while a higher concentration leads to an abrupt one.

颗粒浓度低时，液滴接触线平稳解附，随着颗粒浓度的增加，出现突然解附和多次附着现象。

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If there are ways systematically to beat the markets these days, they probably require men with physics doctorates and massive computer power rather than a smooth manner and the right contact book.

ECONOMIST: Investment management

But a real conversation, as I talked about in the last blog, is full of anticipatory nods and hand-offs of eye contact in order to allow smooth conversational Ping-pong.

FORBES: How to Spot Fake Listening: Body Language Quick Takes #4

His team has been in close contact with the Bush administration to pave the way for a smooth handover of power.

BBC: US jobless rate at 14-year high