word外层硬化钢（wàicéng yìnghuà gāng）の意味 外层硬化钢［外層硬化鋼］ピンインwàicéng yìnghuà gāng［wai4ceng2 ying4hua4 gang1］意味肌焼入鋼． 2021.07.08word
