The concepts of high speed impact and low speed contact in gear rattling were proposed firstly in accordance with the disadvantages of the present methods.

针对以往研究齿轮系统拍击振动方法存在的不足，提出了齿轮系统拍击振动中高速碰撞和低速接触的概念。

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It enables the speed and productivity required for high volume contact centers via a customizable, high-performance user-interface designed for productivity and multi-tasking.

它通过为提高工作效率和多任务而设计的可自定义、高性能用户界面支持大量联系中心所需的速度和工作效率。

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Which limits them to the speed of light and makes the possibility of their ever making contact pretty slim.

这限制了它们只能在光速执行旅行，这也让它们曾做出的交流尝试希望渺茫。

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Coaches cannot spend more than a third of practice time in full speed contact.

CNN: Make football safe for our kids

Even the National League is no longer home to a style of baseball that values speed and contact hitting over hacking and hoping for the long ball, he says.

WSJ: Baseball 2013: Here Come the Flamethrowers

At cruising speed, these blades were its only points of contact with the water.

FORBES: Magazine Article