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单词 chi particle
释义 chi particle AHD[kī, kē] D.J.[kaɪ, kiː]K.K.[kaɪ, ki]n.(名词)
  1. An electrically neutral meson having a mass 6,687 times that of the electron and a mean lifetime of approximately 1.5 × 10-20 seconds. χ粒子:中性电介子,质量为电子的6687倍,平均寿命约1.5×10-12
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