polar cap

听听怎么读
[ˈpəulə kæp]
是什么意思
  • n.

    行星两极处之极冠,南北极的冰帽;

  • 学习怎么用

    权威例句

    Polar cap
    Polar cap
    Magnetic activity in the polar cap—A new index
    Variations in the polar cap area during two substorm cycles
    F layer ionization patches in the polar cap
    Dependence of polar cap potential drop on interplanetary parameters
    Polar cap electric field structures with a northward interplanetary magnetic field
    Gamma-Ray Pulsars: Emission from Extended Polar CAP Cascades
    A new source of suprathermal O + ions near the dayside polar cap boundary
    Electric and magnetic field characteristics of discrete arcs in the polar cap
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