逆冲推覆构造系统沿八家子盆地东缘和北西缘分布，控制铅锌矿床的就位与分布，为成矿期构造。
Thrust nappe system, extending along southeast and northwest margin of Bajiazi basin. controls the emplacement and distribution of Pb-Zn deposits, so it is metallogenic structure.
研究了多重化逆变器的一种控制方法，采用逆推的方法确定各单元的触发脉冲，通过多重移相叠加原理得到正弦波输出。
A new control method of multiunit inverter is described, which determines the triggering pulse for each unit to obtain the sine wave output through multiple-phase shifting superimposition principle.
研究了多重化逆变器的一种控制方法，采用逆推的方法确定各单元的触发脉冲，通过多重移相叠加原理得到正弦波输出。
A new control method of multiunit inverter is described, which determines the triggering pulse for each unit to obtain the sine wave output through multiple-phase shifting superimposition principle.
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