“relative number of spots”的概念、定义、翻译、参考文献-科学参考

单词	relative number of spots
释义	relative number of spots 黑子相对数
随便看	power level gain power level indicator power leveling power level saftey system power lifetime power lift power lift control power-lifter power-lift lever power-lift plough power light power limitation power line power-line carrier powerline carrier power-line connection power-line filter power line fittings power-line interference power line noise power -line terminal power line time signal transfer power-line voltage power link power linkage

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