基本解释[经济学]皮囊流量计词组短语短语bellows gas meter [仪]膜盒式气量计bellows s meter 皮囊流量计bellows -type gas or orifice meter 伸缩式气体孔板流量计bellows differential flow meter 膜盒式差压流量计bellows s gas meter 膜盒式气量计专业释义经济学皮囊流量计