结合煤炭行业液压支架主体机构的设计，介绍了几种近似直线机构的简易设计方法。
According to the body mechanism design of power supports in coal business, this paper introduces some simple design methods of approximate straight line mechanism.
这一大批额外的资源，加上G 20峰会给予IMF的得到强化的监管角色，对于这个其存在意义在繁荣年代直线下滑的机构来说将是一次重大的转变。
This flood of extra resources, plus an enhanced oversight role the G20 has given to the fund, will be a huge turnaround for an institution whose relevance had slumped in the boom years.
它们分别与直线位移的执行机构和角位移执行机构配合使用。
They are with the linear displacement and angular displacement of the implementing agencies with implementing agencies to use.
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