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单词
protium
释义
protium
/ˈprəʊtiəm/
n.
the ordinary isotope of hydrogen as distinct from heavy hydrogen (cf.
参见
DEUTERIUM, TRITIUM)
氕
(
氢的同位素
)
[modern Latin, from PROTO- + -IUM]
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更新时间:2026/6/21 16:00:02