preheater造句
borosilicateglasstubeairpreheaterjacketed-pipehigh-pressuresteampreheaterThefilamentdriveincludedatrailingweightandapreheater.Aftertheairpreheatersystemofhydrogenatedreactionfurnacechangesintoheattube...
borosilicateglasstubeairpreheaterjacketed-pipehigh-pressuresteampreheaterThefilamentdriveincludedatrailingweightandapreheater.Aftertheairpreheatersystemofhydrogenatedreactionfurnacechangesintoheattube...