用途use加长机构主要适用于地下管道阀门或不易接近的阀门用于加长传动装置使用。

Longer mainly for underground pipes or difficult to close the valve valve gear for extended use.

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个性：正如一些亲身经历过这个睡眠不足，我能安全地说在那些天当我失去了很多睡眠，我是个脾气暴躁的和不易接近的个体。

Personality: as someone who has personally experienced this debilitating loss of sleep, I can safely say that on the days when I lose a lot of sleep, I am a very grumpy and unapproachable individual.

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非线性的视觉的技术现下被认为是可提供在透过道统的来源不久不易接近的波长产生镭射辐射的最有效率的方法。

Nonlinear optical techniques are now recognized as the most efficient means available to generate laser radiation at wavelengths that are presently inaccessible via conventional sources.

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