常見例句雙語(yǔ)例句There is no common normal in the conical involute gear and the fixed chordal tooth thickness can not be measured accurately because of the coexistence of helix angle and taper.漸開線錐形齒輪由於同時(shí)存在錐度和螺鏇角,使得其固定弦齒厚無(wú)法精確測(cè)量,也沒(méi)有公法線。 返回 conical involute gear