This made it very convenient for testing performance of switching power supply at step load.
这种模式很方便用来开关电源的动态负载测试。
E. The articles for guest use are in sufficient supply and convenient to take.
顾客使用物品总是充足且方便取用。
E. The articles for guest use are in sufficient supply and convenient to take.
顾客使用物品总是充足且方便取用。
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