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- planetary ionosphere 行星电离层
- Measured the planetary tilt in degrees. 测量地球倾斜的角度
- He formulated the theory of planetary movement. 他系统阐述了行星运动理论。
- The ionosphere is basically dragged away. 电离层几乎被拖走。
- Most planetary orbits are not circles but ellipses. 大多数行星的运转轨道是椭圆形而非圆形。
- Kepler's Laws of planetary motion. 开普勒行星定律。
- Planetary Association for Clean Energy, Inc. 清洁能源行星协会公司;
- These monuments are on major planetary grid points. 这些纪念碑是行星的主网格点。
- RUGGEDNESS. Dual planetary wheel drives. 强度：双行星齿轮驱动。
- Can the Planetary Fortress lift off? 行星要塞能飞行吗?
- The Builder focuses on building a planetary empire. 建造者集中于建立一个星球帝国。
- Adjustment to planetary environment. 行星环境的修正。
- STELLAR and planetary nurseries are private places. 恒星和行星产生的诞生地是很隐秘的位置。
- Its upper limit is determined by the conditions in the ionosphere. 其上限由电离层的状态而决定。
- Rockets and artificial satellites can go far above the ionosphere. 火箭和人造卫星能够到达电离层以上极远的地方。
- Propagation of ultra short wave and microwave in the ionosphere. 见电离层无线电波传播。
- The larger and inner of the two planetary satellites of Mars. 火卫一火星的两颗卫星中较大的和离火星较近的一颗
- New discoveries about Uranus excited planetary astronomers in 1977. 一九七七年对天王星的几项新发现振奋了行星天文学家。
- Applications to physics: the oscillator and planetary motion. 物理上的应用：谐振和行星运动。
- Just as the planets revolve about the sun, planetary electrons are thought of as revolving about the nucleus. 正像行星围绕太阳转一样，行星般的电子被认为是围着原子核转的。
