Experiments on deoxidation with Al for ZL18A steels were carried out.The effect of [Al]s content on non-metallic inclusion was observed.是什么意思_Experiments on deoxidation with Al for ZL18A steels were carried out.The effect of [Al]s content on non-metallic inclusion was observed.在線翻譯_英語_讀音_用法_例句