短語(yǔ)詞組短語(yǔ)needle measuring valve 針形流量測(cè)定牐閥NEEDLE GLOBE VALVE 針型閥;針形截止閥needle plug valve 針閥;針狀閥needle e valve 針閥;針形閥needle control valve 針閥控制閥needle e valve seat 針閥座needle -valve nozzle 針閥式噴嘴needle type valve 針形閥;針閥Needle -Valve 針閥式 返回 needle valve