字典網>> 英漢字典>> S開頭詞條>>single helical gear的意思 漢英字典single helical gear中文翻譯：【機】 單螺旋齒輪single helical gear英文字典英文字典相關詞條：single particle model single mumps single-phase circuit single electron transfer single entry bookkeeping single-carrier theory single stage pump single flash single-seater single layer