单词	极地气团
释义	极地气团医polar air mass
随便看	astronomical control astronomical coordinate astronomical coordinate measuring instrument astronomical coordinates astronomical coordinate system astronomical cross bearings astronomical cycle astronomical date astronomical day astronomical determination astronomical digital image astronomical distance astronomical distances astronomical ECD spectrometer astronomical eclipse astronomical education in china astronomical electronics astronomical ephemeris astronomical ephemeris, astronomical almanac astronomical eqator astronomical equator Astronomical Explorer astronomical explorer satellite astronomical eyepiece astronomical facilities and technique