膜式真空脱气机
film type vacuum deaerator
热电偶式真空计
thermocouple vacuum gage
thermocouple vacuum gauge
薄膜真空脱气机
film type vacuum deaerator
测试用膜盒式燃油喷嘴
testing capsule type fuel injection nozzle
节能型水膜式空冷器
energy saving type water film mode air cooler
膜盒式差动流量计
bellows differential flowmeter
膜盒式差压流量计
bellows differential flowmeter