短語詞組短語helix lead angle 螺旋升角helix cone angle 螺旋錐角helix inclination angle 旋流角helix twist angle 螺旋扭轉(zhuǎn)角tangent of helix angle 導(dǎo)程角正切;[機]螺旋角切線helix angle of thread 螺紋螺旋角maximum helix angle [機]最大螺旋角helix angle error 螺旋角誤差helix angle errors 螺旋角誤差 返回 helix angle