英语释义

• a covalent bond in which two pairs of electrons are shared between two atoms

片语

double linkage双键；双重链接

double change bond analogue双键改变类衍生物

double electron bond双电子键

double-bond addition双键加成反应

Double-bond effect重键效应

double valence bond双键

double-bond isomers双键异构体

double-bond isomerization双键异构

double covalent bond双键

double-bond positional双键位置

英汉例句

• and there should a certain amount of double bond of carbon in the multifunctional monomers so as to suppress the degradation of pp.

  若多功能单体分子中含有一定含量的碳—碳双键，则能很好地抑制降解。

• and something that we「ll see later on is that triple bonds, for example, are going to be stronger than a corresponding double bond or a corresponding single bond.

  而我们以后还会看到三键，举例来说，应该更强，相较于相应的双键,或者相应的单键来说。

• so it」s very important that the double bond locks it in a particular conformation.

  所以双键把它们锁定在某一特定形状，是十分重要的。

• the fact that the modified monomer react with the double bond of sbs were found through infrared spectral of sbs and its grafting copolymer.

  通过对sbs和接枝共聚物进行红外光谱分析发现接枝改性单体与sbs的双键发生了显着的接枝共聚反应。

• the type of cyanate ester resin (ce) and its modification by thermosetting, thermoplastics, rubber elastomer and unsaturated compound with double bond are reviewed.

  综述氰酸酯树脂（ce）的种类及热固性树脂、热塑性树脂、橡胶弹性体、含不饱和双键化合物等对ce树脂的改性。

• so for b 2, which is a single bond, that「s 289 kilojoules per mole to break it, and it takes us more energy to break this double bond for carbon, which is 599 kilojoules per mole.

  对于b2，它是单键，需要289千焦每摩尔来打破它，而对于碳双键,打破它要更多的能量，等于599千焦每摩尔。

• and so the double bond is 498.

  双键是。

• 「one - pot」 carbon - carbon double bond formation.

  「一锅」法的碳-碳双键形成反应。

• the double bond is attacked by the oxygen, forming aldehydes and carbonyls.

  双结合受氧的攻击形成乙醛和碳酸基。

• but once you have a double bond here, we have our pi bond, as well as our sigma bond.

  但一旦你有了双键，我们有π键，也有sigma键。

• 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。

• though with the smile of his dear face he drew mother」s yearning heart to him, yet his little cries over tiny troubles wove the double bond of pity and love.

  尽管他可爱的小脸上的微笑牵动着妈妈热切的心，但他因为小小麻烦发出的哭泣声却编织起了母亲的怜惜和关爱。

• in this case we have a double bond between a and b, and in this case we have it between b and c.

  在这种情况下，我们在，a，与，b，之间有一个双键，而在这种情况下，双键在，b，与，c，之间。

• said cocatalyst is characterized by the existence of a double bond electron-depleted by an electroattractive group.

  所述助催化剂的特征在于有电吸引基团消耗电子的双键。

• electrons can cause this double bond to rotate, which places part of the wheel in close proximity to a bulky side-molecule attached to the hub.

  电子可以使这个双拼接口旋转，使得轮子的一部分紧靠连接轮毂的一个大型从属分子上。

• it「s a 1 and 1/2 because it」s halfway between a double bond and a single bond.

  是因为它介于,单键和双键中间。

• though with the smile of his dear face he draws mother's yearning heart to him, yet his little cries over tiny troubles weave the double bond of pity and love.

  虽然他用了可爱的脸儿上的微笑，引逗得他妈妈的热切的心向着他，然而他的因为细故而发的小小的哭声，却编成了怜与爱的双重约束的带子。

• so we would expect to see a double bond for a c 2 c2 b2 and that is, in fact, what we can surmise if we look at the different dissociation energies for the two bonds.

  我们可以预测c2会形成双键2,会形成双键，where，we，would，expect，to，see，a，--，double，bond，for，c，2,会形成单键，and，a，single，bond，for，b，2。,这实际上，我们可以从两个键的不同的,离解能上就能猜测到这一点。

• typically, bonds with some degree of double bond character are excluded from minimization so that planarity is preserved.

  特别的，有一定程度双键特点在最小化是将被排除从而保留了平面。