nutation
n. 垂头, 转头运动, 摇摆, 章动 [化] 章动
发音
其它
词形变化
nutations
复数
nutations
释义与例句
n.
-
1.
A bobbing motion that accompanies the precession of a spinning rigid body.
章动
可数 不可数 物理 -
2.
A nodding motion (of the head etc.).
可数 不可数 -
3.
Any of several irregularities in the precession of the equinoxes caused by varying torque applied to the Earth by the Sun and the Moon.
章动
可数 不可数 天文 -
4.
The circular motion of the tip of a growing shoot.
可数 不可数 生物 植物学
词汇关系
上位词 1
相关短语
词源
1610s, from Latin nūtātiō (“nodding”), from nūtō (“to nod”). Compare mutation.
来源:wiktionary