Environmental information can be extracted from bivalve shell geochemistry. In this review, the latest research progress and the existing problems as well as th
The role of He and Ar isotopes in tracing the source of ore fluids has aroused great attention of the broad masses of the geological researchers. On the basis o
有源电力滤波器(Active Power Filter,APF)是一种可以综合补偿电网中谐波、无功和不平衡分量的电力电子装置,是柔性交流输电技术(Flexible Alternating Current Transmission Systems,FACTS)在配电网中的重要应用。并联型有源电力滤波器在负载侧连接有电容器时会出现谐波放大和系统失稳的问题,影响到配电网的安全稳定运行。由于负荷侧的各类功