关微

关微关微
  1. 盐关微地震群的活动局限在矿区内,地震都是微震和极微震。

    The activity of microearthquake swarm is limited in an area of coal mine .

  2. 随着大功率可关断元件与微处理芯片的不断发展,大功率电力电子逆变器得到了越来越多的应用。

    With the high power self-turn-off devices and intelligent high-speed microcontroller development , high power electronic converters are widely used .