osculating orbital ellipse密切: close; intimate; establish c ...轨道: track; pathway; rail; runway ...椭圆: oval; oval-shaped; ellipse; ...密切轨道: osculating orbit轨道椭圆: keplerian cllipse; orbital ellipse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:密切轨道椭圆，即可在微信中查询翻译
