helical surface
短語詞組
- d helical profile surface 三維螺旋齒廓曲面
- helical curved surface 螺旋曲面
- Hyperslender helical -surface 超細(xì)長(zhǎng)螺旋曲面
- helical shaped surface plates 螺旋形狀表面極板
- helical -surface of the screw 螺桿加工
- mouldboard with helical surface 螺旋型犁壁 返回 helical surface