| 单词 | chi particle |
| 释义 | chi particle chi particle AHD: [kº, k¶] D.J. [ka!, ki8]K.K. [ka!, ki]n.（名词）An electrically neutral meson having a mass 6,687 times that of the electron and a mean lifetime of approximately 1.5 × 10&9{-20} seconds. χ粒子：中性电介子，质量为电子的6687倍，平均寿命约1.5×10&9{-12}秒 |
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