“nutation”的概念、定义、翻译、参考文献-科学参考

单词	nutation
释义	nutation [nü`tā·shǝn] ^ASTRONOMY A slight, slow, nodding motion of the earth's axis of rotation which is superimposed on the precession of the equinoxes; it is the combination of a number of perturbations (lunar, solar, and fortnightly nutation). ^BOTANY The rhythmic change in the position of growing plant organs caused by variation in the growth rates on different sides of the growing apex. ^MECHANICS A bobbing or nodding up-and-down motion of a spinning rigid body, such as a top, as it precesses about its vertical axis.
随便看	hydrographic sonar hydrographic survey hydrographic table hydrography hydrohalite hydrohalloysite hydrohetaerolite hydroid Hydroida hydroid polyp hydroiodic ether hydrokaolin hydrokinematics hydrokinetics hydrolaccolith HYDROLANT hydrolase hydrolith hydrologic accounting hydrological civilization hydrologic cycle hydrologic sequence hydrologist hydrolysis hydrolytic enzyme

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