1.
"Olefin (or alkene) Any unsaturated hydrocarbon containing one or more pairs of carbon atoms linked by a double Bond (see covalent Bond, saturation)."
烯烃:含有一对或多对由双键连接的碳原子的一类不饱和烃。
2.
An organic compound containing a hydroxyl group bonded to a carbon atom, which in turn is doubly bonded to another carbon atom.
烯醇一种有机化合物，包含有与碳原子键连的羟基群，该碳原子反过来又与另一个碳原子双键连接
3.
having carbon atoms linked in open chains.
具有开链连接的碳原子。
4.
In the ethyne molecule, a double bond links together the two carbon atoms.
在乙烯分子中是由一个双键将两个碳原子连结在一起的。
5.
Of particular concern is the sun's high-energy ultraviolet( UV) light, which breaks the bonds that hold together the carbon atoms of organic molecules.
其中，太阳所放射的高能紫外光，格外引人关切，它会切断有机分子中碳原子彼此连接的化学键。
6.
One atom of oxygen is linked to the nitrogen atom by a double bond.
一个氧原子以双键与氮原子相连。
7.
Every carbon atom has four bonds.
每个碳原子的价键为四。
8.
Theoretical Study on Spin-spin Coupling Constants of Directly Bonded Atoms;
直接键连原子间核自旋偶合常数的理论研究
9.
Zwitterions Mediated Carbon-Carbon and Carbon-Heteroatom Bond-Forming Reactions;
两性离子参与的碳—碳和碳—杂原子键形成反应
10.
Nanotubes are stronger than metal because the chemical bond holding them together is stronger.
纳管之所以比金属硬，是因为把碳原子连在一起的化学键更强。
11.
The two banana bonds start out from each carbon at roughly the tetrahedral angle.
这两个香蕉键是从每个碳原子以接近四面体角发出的。
12.
A quarternary nitrogen atom.
和四个碳原子相连的氮原子
13.
The Study of Lewis-acid-catalyzed Reactions for the Formation of Carbon-carbon and Carbon-heteroatom Bonds;
Lewis酸催化的碳碳键及碳杂原子键的形成反应的研究
14.
an amine containing the double bond linkage -C=C-N-.
一种具有双键连接C=CN的胺。
15.
Aldehyde: Any of a class of organic compounds that contain a carbonyl group (-C=O; see functional group) in which the carbon atom is Bonded to at least one hydrogen atom.
醛:一类有羰基存在的有机化合物。在醛中,碳原子的两个剩余的键至少有一个与氢原子相连。
16.
a side bond that links two adjacent chains of atoms in a complex molecule.
在一个复杂分子中连接了两个邻近的原子链的侧键。
17.
ketone :Any of a class of organic compounds containing a carbonyl group (-C=O; see functional group) Bonded to two carbon atoms.
酮: 一类包含羰基(－C＝O)的有机化合物,其羰基连接着两个碳原子。
18.
Study on Selective Reduction of Carbon-Carbon Double Bond of α, β-Unsaturated Carbonyl Compounds;
α，β-不饱和羰基化合物的碳碳双键选择性还原研究