The environmental loading value(ELV) of different types of surface treatments are assessed quantitatively, after analyzing the basic data of surface strengthenning for different steels.是什么意思_The environmental loading value(ELV) of different types of surface treatments are assessed quantitatively, after analyzing the basic data of surface strengthenning for different steels.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句