单词	magnetosphere
释义	magnetosphere A comet-shaped region surrounding the earth and other magnetic planets in which the charged particles of the solar wind are controlled by the planet's magnetic field rather than the sun's magnetic field. It extends for some 60 000 km on the side facing the sun but on the opposite side it extends to a much greater extent. The boundary of the magnetosphere is known as the magnetopause (see illustration). The magnetosphere of the earth includes the Van Allen belts. Magnetosphere and magnetopause
随便看	semiclassical approximation semiconductor semiconductor diode semiconductor laser semipermeable membrane series series circuits series-wound machine sets sextant shadow shear modulus shearing force shell model sherardizing shielding SHM shock wave Shockley, William short-sightedness shower shunt SI units sideband sidereal day

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