基本解释[机械工程]蜗轮齿廓变位量词组短语短语Addendum modification of wormwheel W 蜗轮齿廓变位量addendum modification coefficient of wormwheel 蜗轮变位系数addendum modification of wormwheel更多词组专业释义机械工程蜗轮齿廓变位量