flapper-type活瓣: valve; flap式: type; style活瓣式导流器: flapper type diverter活瓣式活门孔: flapper orifice活瓣式流量计: moving-flap liquid meter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:活瓣式，即可在微信中查询翻译
