At low output voltage, the majority of the rated power of traditional adjustable linear power supply is wasted in the internal power supply and the conversion efficiency is low with huge volume.
传统的可调整线性电源在输出电压低时，电源的大部分额定功率耗费在电源内部，变换效率很低，而且体积庞大笨重。
The average rainfall volume on Sichuan and Chongqing rated 345.9 mm, the lowest level in history records since 1951.
四川、重庆平均降水量为345.9毫米，是1951年以来历史同期最小值。
The average rainfall volume on Sichuan and Chongqing rated 345.9 mm, the lowest level in history records since 1951.
四川、重庆平均降水量为345.9毫米，是1951年以来历史同期最小值。
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