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InactiveCN102749491ALarge air gap cross sectionImprove protectionCurrent/voltage measurementVoltage/current isolationCurrent sensorElectromagnetic induction
ActiveCN107172067BImprove experienceSolve the problem that you cannot call out through the IMS networkTransmissionWireless communicationThird generationEngineering
InactiveCN103016749BPrevent air leakageReduce volumeOperating means/releasing devices for valvesFluid braking transmissionInlet channelAutomatic control
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