Pure RE (cerium, lanthanum) have certain improvement effect on the conductivity of pure aluminum with relatively high impurity contents in some degree of addition, but had a slight effect on that with relatively low impurity content.是什么意思_Pure RE (cerium, lanthanum) have certain improvement effect on the conductivity of pure aluminum with relatively high impurity contents in some degree of addition, but had a slight effect on that with relatively low impurity content.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句