differential draft gaugedifferential gagedifferential pre ure gagedifferential pressure gagedifferential pressure instrumentdifferential-pressure devicediffuse gage压: press; push down; hold down; ...差: send on an errand; dispatch计: count; compute; calculate; n ...空气压差计: air manometer皮氏压差计: pitometer下载手机词典可随时随地查词查翻译
