square-edged orifice直角: right angle铣: bright metal孔: hole; opening; aperture流量计: flowmeter; fluid meter; effu ...孔板: pore plate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:直角铣孔流量计孔板，即可在微信中查询翻译
