短語(yǔ)詞組短語(yǔ)Involutes master worm 漸開線測(cè)量蝸桿master worm with two threads 雙頭測(cè)量蝸桿master worm with one thread 單頭測(cè)量蝸桿master worm with three threads 三頭測(cè)量蝸桿 返回 master worm