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压力真空阀
释义
压力真空阀
Encyclopedia
工学
锅炉阀门
释
pressure vacuum valve
压力真空阀
维护压力容器气压平衡,减少介质挥发的安全节能装置。由压力阀和真空阀两部分组成。又称呼吸阀、PV阀。
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Before Dawn
beforehand control
before-image
Before Sunrise
Before the Coming of A New Bureau Director
Before the Coming of a New Bureau Director
Before the Rain
Beg
bega
beg for alms
Beggar's Opera
Beginner’s Guide to the Study of Qin
beginning height
beginning method of documents
Beginning of Autumn
beginning of lunation
beginning of morning twilight
beginning of partial eclipse
Beginning of Spring
Beginning of Summer
beginning-of-tape marker
beginning of the original
beginning of totality
Beginning of Winter
beginning of year
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