短語詞組短語atmospheric dump valve 大氣排放閥atmospheric relief valve 大氣安全閥;大氣泄放閥;向空泄放閥;對空排汽門atmospheric exhaust valve 排空閥atmospheric rilief valve [機]大氣釋放閥dump steam atmospheric valve 向空排汽閥hydraulic valve atmospheric spring 液閥彈簧 返回 atmospheric valve