The manufacturability of stamping for the rock arm was analyzed. The general structure and the stock layout design proposal of the progressive die were introduced.

分析了摇臂件的冲压工艺性，介绍了其级进模总体结构及排样设计方案。

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Further more it also investigates the influence of the stiffness of CAM shaft and rock arm supporter and the high order frequency of CAM profile on the dynamic response of valve system.

同时考虑了气门初始间隙以及由此产生的冲击现象，并研究了凸轮轴刚度、摇臂支座刚度及凸轮升程高阶频率对气门运动规律的影响。

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His arm was caught under a heavy rock when he was climbing by himself.

当他独自攀岩时，手臂被一块沉重的岩石卡住了。

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Dell Ventures managing director Jim Lussier, formerly of Norwest Venture Partners, has this to say about the venture arm of the Round Rock, Texas-based company and its storage ambitions in a blog post today.

FORBES: Dell Ventures Announces $60 Million Fund For Storage Startups

Another used what little was left of his right arm to race up a rock-climbing wall.

NPR: Craig DeMartino: Winner in the Extremity Games

Just before halting its investigations, the nuclear-powered rover used the drill at the end of its 7-foot-long robotic arm to bore into a rock near where it landed and analyze the powder.

NPR: Mars Rover Curiosity Stands Down After New Problem