略語大辞典 [Sat] 21 HEOS Highly Eccentric Orbit Satellite 高度偏心軌道衛星. ヨーロッパの人工衛星の名称.Highly Eccentric Orbit Satellite; by the ESRO(European Space Research Organization); [Sat:Spa]. 丸善「略語大辞典」JLogosID : 11876800