章动

章动 [zhāng dòng]

1. ■ {天} nutation; nodding:

黄经章动 nutation in longitude;

倾角章动 nutation in obliquity

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常用词组

1. ■ 章动常数 nutational constant;

2. ■ 章动传动 nutation drive;

3. ■ 章动传动装置 nutation drive unit;

4. ■ 章动轮 nutation wheel;

5. ■ 章动器 nutator;

6. ■ 章动椭圆 nutational ellipse;

7. ■ 章动周转 nutation period;

8. ■ 章动轴 nutation shaft;

9. ■ 章动子 nutator