Three years ago "Gray's Anatomy" was reorganised according to the regions of the body rather than the functions of the systems.
三年前，《格雷解剖学》被修订，主要是因为躯体定界而非系统功能。
In this paper, the behavior of two-electron and three-electron systems are investigated by few-body theory in quantum mechanics.
文章利用量子力学中的少体理论方法研究了二电子系统和三电子系统的行为。
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