相对螺距

relative pitch的用法和样例:

例句

  1. The horizontal anger has a variable pitch.横向搅龙具有可变的螺距。
  2. When the helicopter is inverted, add enough negative pitch to support the helicopter, and remove the Aft cyclic control.当直升机到达最高点成为倒飞姿态时,增加负螺距使直升机的高度不会下降,将升降舵回到中立点。

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antigenic formula
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