Four precautionary measures are put forward,that is,separating water,injecting methanol/ethylene glycol,heating pipe and depressurizing.是什么意思_Four precautionary measures are put forward,that is,separating water,injecting methanol/ethylene glycol,heating pipe and depressurizing.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句