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单词
periodic system
释义
WordReference Random House Unabridged Dictionary of American English © 2024
pe
′
ri•od
′
ic sys
′
tem
(pēr
′
ē od
′
ik, pēr′-),
USA pronunciation
[
Chem.
]
Chemistry
a system of classification of the elements based on the periodic law.
1870–75
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更新时间:2025/7/24 8:00:41