Compared with steel 45,the working life of the prehardened plastic-mould steel cutting tool is shorter,with the main wear form being grinding abra...是什么意思_Compared with steel 45,the working life of the prehardened plastic-mould steel cutting tool is shorter,with the main wear form being grinding abra...在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句