ˆ¤—pWWWƒT[ƒo[

Encyclopaedia Britannica
’n‹…“dŽ„‹CE’n‹…˜fÆŒ—Šw‰ļ
“ś–{Šwp‰ļ‹c “d”g‰ČŠwŒ¤‹†˜A—ˆĻˆõ‰ļ
•Ä‘’n‹…•Ø—˜A‡(Americal Geophysical Uniton)
“dŽqī•ń’ŹMŠw‰ļ
‘Ū“d”g‰ČŠw˜A‡(URSI)
‹ž“s‘åŠw­—ŃŽ›Œ–@•”
SPG
Exploration of the Earth's Magnetosphere