coefficient for orificecoefficient of orificeorifice coefficient孔口: porthole; ostiole; orifices系数: coefficient; ratio; modulus; ...扩口系数: flaring coefficient切口系数: notch coefficient; notch factor缺口系数: notch coefficient; notch number下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:孔口系数，即可在微信中查询翻译
