earthling-back是什么意思? warning: welding shall not be done on piping connected to the equipment foundation, base plates or the equipment itself, without proper direct earthling-back to the welding transformer. 我认为是这个意思:注意:如未对焊接变压器进行正确的接地,则不应对连接到设备基础、底板或者设备本体的管线进行焊接。查看更多