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| 单词 | planetary electron |
| 释义 | > as lemmasplanetary electron planetary electron n. an electron which is bound to an atomic nucleus. ΚΠ 1919 Times 1 Mar. 7/4 The nucleus consisted of positive electrons, the planetary electrons being negative. 1991 Brit. Jrnl. Philos. Sci. 42 341 The atoms of a given element have many properties in common beyond possessing the same number of planetary electrons (the defining property). < as lemmas |
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