“annual variation”的概念、定义、翻译、参考文献-科学参考

单词	annual variation
释义	annual variation [`an·yǝ·wǝl ver·ē`ā·shǝn] ^ASTRONOMY The change in the right ascension and declination of a star during one year, due to the combined effect of the star's proper motion and the precession of the equinoxes. ^GEOPHYSICS A component in the change with time in the earth's magnetic field at a specified location that has a period of 1 year.
随便看	automatic C bias automatic celestial navigation automatic character recognition automatic check automatic check-out system automatic choke automatic chroma control automatic chrominance control automatic code automatic coding automatic color control automatic computer automatic connection automatic contrast control automatic control automatic control balance automatic-control block diagram automatic-control error coefficient automatic-control frequency response automatic controller automatic-control servo valve automatic-control stability automatic control system automatic-control transient analysis automatic coupling

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