回旋加速器学习要点例说

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一、回旋加速器的基本原理例1(2008年广东卷)1930年劳伦斯制成了世界上第一台回旋加速器,其原理如图1所示,这台加速器由两个铜质D形盒D1、D2构成,其间留有空隙,下列说法正确的是()
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