“solar activity”的概念、定义、翻译、参考文献-科学参考

单词	solar activity
释义	solar activity [`sō·lǝr ak`tiv·ǝdē] ^ASTRONOMY Disturbances on the surface of the sun; examples are sunspots, prominences, and solar flares.
随便看	variable-density sound track variable-depth sonar variable diode function generator variable element variable field variable flow variable-focal-length lens variable-focus condenser variable force variable geometry aircraft variable inductance variable-inductance accelerometer variable inductor variable-length field variable-length operation variable-length record variable-length word variable-mu tube variable nebula variable parameter variable-pitch propeller variable point variable radio-frequency radiosonde variable recoil variable reduction

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