... 示差温度计 differential thermometer 异节距螺纹 differential threads 差电压变压器，差电线圈 differential transformer ...
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The Ecoserial device is a digital economiser with differential pressure gauge able to pilot until 204 valves by connecting itself to a pneumatic driving module RPB with only two threads.
节能控制仪是一数码并内置有压差器的脉冲阀控制仪，最多能控制到204个脉冲阀，而这也只要用两根管子与RPB先导阀盒组串连起来就可以达到。
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