换气: take a breath; aeration chan ...指数: index number; index采气指数: gas pi; gas productivity index臭气指数: odor index屏气指数: bhi; breath-holding index天然气指数: gas index; gi氧气指数: oxygen index value企业景气指数: bsi销售景气指数: sales index滞留空气指数: air trapped index换气: 1.(屏气后再次呼吸) take a breath (in swimming); aeration2.(通风) change of air◇换气风扇 scavenger fan; 换气口 scavenge port; 换气装置 air interchanger气速指数,换气速度系数: air velocity index采气指标: gas productivity index漏气指示器: gas leak indicator; gas leakage indicator; gas-leak indicator煤气指示器: gas indicator天气指南: weatherwise烟气指示器: smoke indicator氧气指示器: oxygen indicator沼气指示器: damposcope; warner肺换气: gas exchange in the lung; pulmonary exchange; pulmonary ventilation换气-灌注: ventilation-perfusion换气，曝气: airing换气泵: scavenge pump; scavenger pump; scavenging air pump; scavenging pump换气比: scavenging ration换气窗: air hole; vent
