鋼鐵脫碳作用蠕緩放電脫碳處理脫炭decarburization depth: 脫碳厚度decarburization slag: 脫碳礦碴depth of decarburization: 脫碳深度rate of decarburization: 脫碳率skin decarburization: 表面脫碳下載手機詞典可隨時隨地查詞查翻譯