赫歇尔 HERTA high energy X-ray telescope 高能 X 射线望远镜' – English translation

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赫歇尔卫星欧洲空间局天文卫星，又称远红外和亚毫米波望远镜/ FIRST HERTA high energy X-ray telescope 高能 X 射线望远镜'

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