double bond (chemistry)
Tone colorsmāmámǎmàma
Meanings
1 sense · 3 examplesnoun
double bond (covalent bond formed by sharing two pairs of electrons)
A fundamental concept in organic chemistry. Usually represented by the symbol '=' between two atoms.
Zhè这
gè个
huà化
hé合
wù物
hán含
yǒu有
yī一
gè个
tàn碳
tàn碳
shuāng双
jiàn键
。
This compound contains a carbon-carbon double bond.
Shuāng双
jiàn键
tōng通
cháng常
yòng用
liǎng两
tiáo条
duǎn短
xiàn线
（
＝＝
）
lái来
biǎo表
shì示
。
Double bonds are usually represented by two short lines (=).
Show 1 more exampleShow fewer examples
Zài在
jiā加
chéng成
fǎn反
yìng应
zhōng中
，
shuāng双
jiàn键
huì会
duàn断
liè裂
bìng并
xíng形
chéng成
xīn新
de的
dān单
jiàn键
。
In addition reactions, the double bond breaks and new single bonds are formed.