钢铁脱碳作用蠕缓放电脱碳处理脱炭decarburization depth: 脱碳厚度decarburization slag: 脱碳矿碴depth of decarburization: 脱碳深度rate of decarburization: 脱碳率skin decarburization: 表面脱碳下载手机词典可随时随地查词查翻译