“contra-propeller”的概念、定义、翻译、参考文献-科学参考

单词	contra-propeller
释义	contra-propeller 反向旋转螺旋桨
随便看	thread link thread micrometer calliper thread mill thread miller thread milling thread milling attachment thread milling cutter thread (of a screw) thread of chromosome thread opening machine thread out signal thread peeling machine thread pitch thread plug thread plug ga(u)ge thread polishing machine thread producing machine thread profile thread protector thread rating thread restoring tool thread ring ga(u)ge thread roller thread rolling thread-rolling die

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