亚洲乱码一区二区三区在线观看,少妇被又大又粗又爽毛片久久黑人 ,96精品成人无码A片观看金桔,色先锋资源久久综合5566

What is the motherboard power charger, the motherboard power charger is divided according to the design circuit operating frequency, can be divided into power frequency machine and high frequency machine, the power frequency machine is designed by the traditional analog circuit principle, the machine internal power device (such as transformer , inductance, capacitors, etc.) are large, generally there is less noise when the load is larger, but the model has strong resistance to resistance in harsh grid environment conditions, reliability and stability are higher than high frequency machine Strong.