西门子压力变送器,西门子压力
（2）在进行间接测量时，需要保证测试仪器的精度和准确性。（2）短路：变压器短路也是低压开关跳闸的常见原因。当变
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（2）变压器的选择：在选择变压器时，需要根据所需的输出电压和输入电压来选择变压器系数合适的变压器。
