spiral groove meaning in English

螺旋槽
螺旋沟

The rotating cylinder with spiral grooves acts as a speed selector .
螺旋切口的旋转圆筒作为速率筛选器。
Finite element analysis of the spiral groove dry gas seals
螺旋槽干气密封的有限元分析
Study on seal of gas along cylindrical spiral groove
径向圆柱型气体螺旋槽密封的理论与实验研究
Die design of forming pipe spiral groove
管材螺旋槽成形模具设计
Characteristic of gas film between spiral groove dry gas seal faces
螺旋槽干气密封端面间气膜特性

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