notification

                  Working Principle

                  A transformer is a stationary electrical device. It is a device that converts a certain level of AC voltage and current into another level of voltage and current of the same frequency according to the principle of electromagnetic induction. Function: Transform AC voltage, exchange AC current and transform impedance.

                  1.jpg
                  亚洲国产精品综合久久久|国产日韩久久久久无码精品|青草青青产国视频在线|人妻少妇精品无码专区吞精|久久国产成人亚洲精品影院老金|一级A片欧美高潮在线播放|九九99久久精品国产