The operation of quench systems in domestic ethylene plants are not very good until now, especially the operating parameters of quench oil system deviate from the design parameters.是什么意思_The operation of quench systems in domestic ethylene plants are not very good until now, especially the operating parameters of quench oil system deviate from the design parameters.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句