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单词
double bond
释义
WordReference Random House Unabridged Dictionary of American English © 2024
dou
′
ble bond
′
,
[
Chem.
]
Chemistry
a chemical linkage consisting of two covalent bonds between two atoms of a molecule, represented in chemical formulas by two lines, two dots, or four dots, as CH
2
=CH
2
;
CH
2
:CH
2
;
CH
2
::CH
2
.
1885–90
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更新时间:2024/9/22 19:25:53