螺旋桨的叶片在奋力地旋转以便让我们停留在空中。

The rotors fought to keep us in the air.

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叶片扭曲的量被称之螺旋上升角。

The amount of blade twist is called the pitch angle .

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螺旋钻头：铸钢叶片，钻尖，耐磨。

Spiral drill : steel blades, drill, wear resistance.

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按照大型舰船用螺旋桨的数控加工工艺要求，制定了叶片的加工工序。

By the machining process planning, the machining working procedure of propeller blade is come true.

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按照大型舰船用螺旋桨的数控加工工艺要求，制定了叶片的加工工序。

By the machining process planning, the machining working procedure of propeller blade is come true.

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