標準混合氣

biaozhunhunheqi，qitigongyemingci。biaozhunhunheqishuyubiaozhunwuzhi，tashigaodujunyun
，lianghaowendingheliangzhizhunquedeceliangbiaozhun，juyoufuxian
，baocunhechuandiliangzhidejibenzuoyong。