The technological conditions of preparing polishes from bastnasite such as pretreating with hydrochloride acid,roasting and quenching were studied.是什么意思_The technological conditions of preparing polishes from bastnasite such as pretreating with hydrochloride acid,roasting and quenching were studied.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句