In traditional topology of the dynamic voltage restorer(DVR) with flywheel energy storage(FES), a special rectifier is utilized to charge the FES. It increases the complexity and cost of the system.

基于飞轮储能的动态电压恢复器的传统拓扑结构采用辅助整流器给飞轮充电，提高了系统的复杂程度，也增加了成本。

youdao

Metal deposit environmental pollution originates from the oxidation and decomposition reaction of metal sulfides , particularly pyrite(FeS 2) and pyrrhotite (FeS).

金属矿山环境污染源于金属硫化物特别是黄铁矿、磁黄铁矿的氧化分解。

youdao

Metal deposit environmental pollution originates from the oxidation and decomposition reaction of metal sulfides , particularly pyrite(FeS 2) and pyrrhotite (FeS).

金属矿山环境污染源于金属硫化物特别是黄铁矿、磁黄铁矿的氧化分解。

youdao