下面这句话怎么翻译? 第二句有不同理解: where possible, transmitter shall be electronic smart type , 2 wires 4-20 ma output signal with hart communication features shall be suitable for electronic calibration using a handheld calibrator or by plant dcs system 尽量使用智能电子变送器,利用手持校验仪或通过装置dcs系统进行电子校验时应采用两线4-20 ma输出信号(采用hart协议)。查看更多