ground-based electro-optical deespace surveillance地面: the earth's surface; ground光电: photoelectricity高空: high altitude; upper air; we ...观测: observe; observation; viewin ...高空观测: aerologic lbservation; aerological ascent; aerological observation; upper air observation; upper-air observation; upper-air sounding下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:地面光电高空观测，即可在微信中查询翻译
