When brake disc wears enough to affect safety in operation or can 't adjust clearance, this is called failure.

当制动盘磨损到影响安全操作或制动间隙无法调节时，即为失效。

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The paper submits a typical calculation method for safety selecting the clearance value.

本文就库瓦间隙的安全取值提出了具体的计算方法。

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It is highly important to the efficiency guide line of the whole hydraulic equipment unit and to the unit runs safety and steadily that the wicket gate end clearance of the hydraulic turbine.

水轮机的导叶端面间隙对整个水轮发电机组的效率指标及安全稳定运行有着重要影响。

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The Transition Roadable Aircraft, basically a flying car, recently received clearance from the National Highway Traffic Safety Administration (NHTSA) to operate both on land and in the air.

FORBES: The Flying Car Has Arrived (Seriously)

Villa almost scored when James sliced an attempted punched clearance but with the ball skidding towards goal, Campbell hacked clear to safety.

BBC: Aston Villa 0-0 Portsmouth