• So if we look at its length, it's actually shorter than a single bond, but longer than a double bond.

    因此如果我们看它的键长的话,它实际上比单键更短,却比双键更长。

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  • Or if we look at how strong it is, it's actually stronger than a single bond, but weaker than a double bond.

    或者如果我们看键的强度的话,它实际上比单键更强,而比双键更弱。

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  • And we find the same thing for these two atoms here, it's not actually a double bond, it's somewhere between a single bond and a double bond.

    而且我们发现这两个原子的情况是一样的,它其实不是一个双键,而是介于单键与双键之间的。

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  • All right, so let's think of a more complicated example of having a double bond, and maybe a more interesting example, and this is talking about benzene.

    好了,让我们来看关于双键的,一个更复杂的例子,也许是更有趣的例子,我们要讨论苯环。

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  • And by that what we mean is that they're absolutely identical, and it turns out that this here is not a double bond, it's not a single bond either, it's actually something in between.

    这意味着它们是绝对完全相同的,实际情况应该是这不是一个双键,这也不是一个单键,而是介于两者之间的状态。

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  • It selects and severs double bond organic matter.

    臭氧选择并破坏有双键的有机物。

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  • 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。

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  • The heat-resistance is improved by the addition of initiator to control the content of double bond.

    通过加入适量的引发剂控制体系的双键含量,可有效提高SBS的耐热性。

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  • It's especially applicable for polymers with double bond or rubber formulation with hydroxyl fillers.

    JH-S69最适用于在含双键聚合物或其共混物中采用含羟基填料的橡胶配方。

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  • Monounsaturated fatty acid (MUFA) is a sort of fatty acids, including a double bond in its carbon chain.

    单不饱和脂肪酸(MU FA)是脂肪酸的一种,其碳链上只有一个双键。

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  • Their cytotoxicity reduced obviously while the double bond in steroidal nucleus or side-chain was saturated.

    当甾核或支链中双键被饱和时,其细胞毒性均明显降低。

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  • Depending upon reaction conditions, the product may be a polyketone formed by addition polymerization of the ketene double bond.

    随着反应条件的不同,产物可以是由烯酮的双键加成聚合得到的聚酮。

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  • The established method provides a new technical tool for the location of double bond positions in the polyunsaturated fatty acids.

    所建立的方法为不饱和脂肪酸碳链中双键位置的确定提供了新的技术手段。

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  • 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。

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  • The organic group further comprises at least one activating group on at least one carbon atom of the C-C single bond or double bond.

    所述有机基团进一步包括至少一个在所述C-C单键或双键的至少一个碳原子上的活性基团。

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  • Unbranched hydrocarbons having one double bond are named in the IUPAC system by replacing the ending -ane of the alkane name with -ene.

    在系统命名法中,直链的、有一个双键的烃可通过将其相应烷烃名字的词尾—ane改换为- ene而得。

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  • The target molecule was synthesized through using chiral reagent, reduction of double bond, hydrogenolysis and hydrolysis of ester group.

    之后,经引入手性试剂,双键还原,氢解,水解酯基得到目标产物的合成路线。

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  • Furthermore, the existing form, main composition and their variation of double bond in the side-chain of urushiols were discussed as well.

    本文还对漆酚类侧链中双键的存在形式,主要组成及变化进行了分析讨论。

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  • Ring closing metathesis (RCM) of dienes to cycloalkene provides an important tool for C-C double bond formation catalyzed by metal carbene.

    关环转换反应是形成碳碳双键的重要反应之一,即双烯化合物在金属碳烯催化下关环得到环烯类化合物。

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  • The key reactions included the formation of 9, 15-cyclopropyl function and double bond migration in the a ring to reestablish the GA skeleton.

    本合成工作的关键为9,15环丙基的形成及在重建GA骨架时a环中双键的重排反应。

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  • The effect of the ratio of hydrogen peroxide to double bond of allyl group, reaction temperature and reaction time on epoxidation was investigated.

    考察了双氧水与烯丙基双键配比、反应温度和反应时间对环氧化反应的影响。

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  • Its molecular form, with two atoms joined by a double bond, makes life on Earth possible - but this form had never definitively been seen in space.

    两个氧原子以双键形式结合形成氧分子,这种氧分子使地球上的生命成为可能,但这种氧分子从来没有在太空中发现过。

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  • In the two sides of nitrogen bridge, the degree of conjugation of one double bond with one formyl polyenic group is about equal to two aromatic cycles.

    在氮桥的二边,一个双键及一个烯醛基共轭程度大致与二个芳稠环相当。

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  • 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.

    虽然他那可爱的小脸儿的微笑,系着妈妈热切的心,然而他因小小麻烦而发出的啜泣,却编织成了怜与爱的双重牵绊。

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  • 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。

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

    虽然她可爱的脸上泛着微笑,能牵动着妈妈热切的心,但她因小小的麻烦而发出的啜泣,却编织了怜惜与关爱双重的牵绊。

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  • NMR characterization of the synthesized products shows that the double bond in the norbornene rig of the product polymers is not affected by the ATRP conducted.

    产物的NMR分析证明所合成产物分子中降冰片烯环上双键未参与聚合反应。

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  • 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。

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  • During the ozone oxidation process of furnace black, the carbon-oxygen single bond can be formed mainly, but further oxidation to the carbon-oxygen double bond is very difficult.

    炉法炭黑表面臭氧化过程中主要生成的是表面碳氧单键结构,进一步氧化为双键的程度很低。

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  • The results show that the condensation degree of dissolved lignin is relative higher and the increase of conjugated double bond is mainly proceeded at the early stage of cooking.

    结果表明,溶出木质素的缩聚程度较高,其共轭双键的增加主要发生在蒸煮前期。

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