LV 09202 is a key valve in the ammonia stripping process for urea production of Snam Company,Italy.In the course of production,urea system has often to shutdown because of the failure of this valve.是什么意思_LV 09202 is a key valve in the ammonia stripping process for urea production of Snam Company,Italy.In the course of production,urea system has often to shutdown because of the failure of this valve.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句