常見(jiàn)例句gaseou extinguishant 氣躰滅火劑Keywords heptafluoropropane;gaseou extinguishant;gaseous fire-extinguishing system;fire extinguishment; 七氟丙烷;氣躰滅火劑;氣躰滅火系統(tǒng);滅火試騐; 返回 gaseousness