钩丝螺旋轮装于鱼杆上用来放出或收回鱼线的卷筒状装置。
A cylindrical device attached to a fishing rod to let out or wind up the line.
先进液体火箭发动机高性能螺旋轮的流体动力设计是个关键技术。
The hydrodynamic design of advanced liquid rocket engine high performance inducers is a challenging technology.
先进液体火箭发动机高性能螺旋轮的流体动力设计是个关键技术。
The hydrodynamic design of advanced liquid rocket engine high performance inducers is a challenging technology.
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