基本解释[機械工程]標準蝸杆词组短语短語Involutes master worm 漸開線測量蝸杆master worm with two threads 雙頭測量蝸杆master worm with one thread 單頭測量蝸杆master worm with three threads 三頭測量蝸杆master worm更多词组专业释义機械工程標準蝸杆