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气压继电器 qìyā jìdiànqì
met. gas-pressure relay
space barometric switch; baroswitch (barometric switch 的缩写)
tech. air relay; barometric pressure switch; barometrical pressure switch; pneumatic relay
气压〔动〕继电器
construct. air relay
气压 继 电 器: 4 phrases in 2 subjects
Aviation1
Technology3