基本解釋[機械工程]標準蝸桿詞組短語短語Involutes master worm 漸開線測量蝸桿master worm with two threads 雙頭測量蝸桿master worm with one thread 單頭測量蝸桿master worm with three threads 三頭測量蝸桿master worm更多詞組專業(yè)釋義機械工程標準蝸桿