Normally,the light tube preheater with great volume and mass was modified into thermo-tube preheater with high technology and compact in design.是什么意思_Normally,the light tube preheater with great volume and mass was modified into thermo-tube preheater with high technology and compact in design.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句