男人J桶女人P免费视频,无毛一线天嫩穴19,av频在线观看免费高清下载,淫欲淫色淫香视频,成人网站免费观看视频,亚洲精品生活一区二区三区,国产一区二区三区91,日本精品床戏做爰

Resistive energy-consuming regenerative braking energy utilization devices are used in urban rail transit. The device absorbs the energy generated during the regenerative braking of the train by means of resistive heating, ensuring the electric braking function of the train, reducing the wear of the brake tiles and improving the tunnel environment. The high peak power of the device can fully match the peak power requirements of train braking.