平静 平靜 píng jìng tranquil / undisturbed / serene syn 轨道 軌道 guǐ dào track (for trains etc) / orbit (of a satellite) / (fig.) a person's established path in life / desired trajectory (of a business or other endeavor) / (audio engineering) track / (quantum mechanics) orbital syn 安顿 安頓 ān dùn to find a place for / to help settle down / to arrange for / undisturbed / peaceful syn 轨迹 軌跡 guǐ jì locus / orbit / trajectory / track syn 盘旋 盤旋 pán xuán to spiral / to circle / to go around / to hover / to orbit syn 坦然 tǎn rán calm / undisturbed syn 绕行 繞行 rào xíng to take a circular (or circuitous) route / to do a circuit / (of a planet) to orbit / (of a sailor) to circumnavigate / to take a detour / to bypass 鸡犬不宁 雞犬不寧 jī quǎn bù níng lit. not even the chickens and dogs are left undisturbed (idiom) / fig. great commotion / pandemonium syn 地球轨道 地球軌道 dì qiú guǐ dào Earth orbit (orbit of a satellite around the Earth) / Earth's orbit (orbit of the Earth around the Sun) 低地球轨道 low Earth orbit / low orbit / low-altitude orbit 地球同步轨道 地球同步軌道 dì qiú tóng bù guǐ dào geosynchronous orbit / geosynchronous Earth orbit 高轨道 gāo guǐ dào high orbit / high altitude orbit 受摄轨道 受攝軌道 shòu shè guǐ dào disturbed orbit / perturbed orbit 弃星轨道 棄星軌道 qì xīng guǐ dào graveyard orbit / disposal orbit 太阳同步轨道 太陽同步軌道 tài yáng tòng bù guǐ dào heliosynchronous orbit / sun-synchronous orbit 晨昏轨道 晨昏軌道 chén hūn guǐ dào dawn orbit / dusk orbit 恬漠 tián mò indifferent and undisturbed 未开采森林 未開采森林 undisturbed forests 原状森林 原狀森林 yuán zhuàng sēn lín undisturbed forests 圆轨道 圓軌道 yuán guǐ dào circular orbit (in astronomy and in astronautics) 宇宙号 宇宙號 yǔ zhòu hào Kosmos, series of earth-orbit satellites operated by the Soviet Union and subsequently Russia 月孛 yuè bèi (ancient Chinese astrology) Yuebei, a heavenly body postulated to exist at the apogee of the Moon's orbit, hindering the Moon's progress 月径 月徑 yuè jìng moonlit path / diameter of the moon / diameter of the moon's orbit 绕地 繞地 rào dì to orbit the earth 罗睺 luó hóu the intersection of the Moon's orbit with the ecliptic in Vedic astronomy (Sanskrit rahu) 近日点 近日點 jìn rì diǎn perihelion, the nearest point of a planet in elliptic orbit to the sun / lower apsis 送上轨道 送上軌道 sòng shàng guǐ dào to send into orbit 黄白交点 黃白交點 huáng bái jiāo diǎn ecliptic line / intersection of the ecliptic with the moon's orbit plane 极轨道 極軌道 jí guǐ dào polar orbit 远日点 遠日點 yuǎn rì diǎn aphelion, the furthest point of a planet in elliptic orbit to the sun / opposite: perihelion 近日點|近日点[jin4 ri4 dian3] / higher apsis 天平动点轨道 tiān píng dòng diǎn guǐ dào libration orbit 轨道倾角 guǐ dào qīng jué orbit inclination / orbital inclination 降低轨道 orbit lowering 姿态和轨道控制 attitude and orbit control 顺行轨道 direct orbit 克拉克轨道 kè lā kè guǐ dào Clarke orbit 入轨 rù guǐ to enter orbit 射入轨道，入轨 射入軌道，入軌 orbit injection 日心轨道 rì xīn guǐ dào heliocentric orbit 人球轨道 rén qiú guǐ dào orbit (in -) 各国利用地球静止轨道所应遵守的原则 各國利用地球靜止軌道所應遵守的原則 Principles governing the activities of States in the utilization of the geostationary orbit 转移轨道 轉移軌道 transfer orbit 停泊轨道 停泊軌道 tíng bó guǐ dào parking orbit 漂移轨道 漂移軌道 drift orbit 轨道圆化 軌道圓化 guǐ dào yuán huà orbit circularization 轨道漂移 軌道漂移 orbit drift 逆行轨道 逆行軌道 retrograde orbit 赤道轨道 赤道軌道 chì dào guǐ dào equatorial orbit 晕轨道 暈軌道 halo orbit 轨道衰变 軌道衰變 orbit decay / orbital decay 大偏心率轨道 大偏心率軌道 highly eccentric orbit 中等地球轨道 中等地球軌道 medium Earth orbit 同步卫星轨道 同步衛星軌道 tòng bù wèi xīng guǐ dào synchronous orbit 地球静止轨道一般原则草桉 地球靜止軌道一般原則草案 Draft General Principles Governing the Geostationary Orbit 对地静止转移轨道 對地靜止轉移軌道 geostationary transfer orbit 地球静止轨道专家组 地球靜止軌道專家組 Expert Group on Geostationary Orbit 静止轨道激光同步 靜止軌道激光同步 jìng zhǐ guǐ dào jī guāng tòng bù Laser Synchronization from Stationary Orbit 足够高的轨道 足夠高的軌道 sufficiently high orbit 整数轨道 整數軌道 integer orbit 近地轨道 近地軌道 jìn dì guǐ dào low Earth orbit (LEO) 