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单词
protium
释义
protium
n. the ordinary isotope of hydrogen as distinct from heavy hydrogen (cf. DEUTERIUM, TRITIUM).
Etymology
: mod.L f. PROTO- + -IUM
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unknown
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unladylike
unlaid
unlamented
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unlawful
unlay
unleaded
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更新时间:2025/9/21 9:33:21