Covalent catalysis involves the substrate forming a transient covalent bond with residues in the active site or with a cofactor.
共价催化涉及底物与活性位点中的残基或与辅因子形成瞬时共价键。
Bond insurers such as MBIA and Assured Guaranty, which took hits on mortgage securities they had “wrapped” with credit enhancement, are becoming more active too.
债券承保人，例如MBIA和ASSURED GUARANTY也参与按揭证券，为其包装并增加信用度，现在也行动起来。
Therefore, research on bond performance of corroded reinforced concrete is one of the most active and promising research fields.
因此，锈后钢筋混凝土的粘结问题是目前最为活跃、最有发展潜力的研究领域之一。
Catastrophe bond is the most active transacted and widely used product among the large number of catastrophic derivatives.
在众多的巨灾衍生产品中，交易最活跃使用最广泛的便是巨灾债券。
The layered clay minerals have two active adsorptive centers, i. e. the replacing structure and the residual bond on fractured surface.
这些层状粘土矿物具有取代结构和断面余键两个吸附活性中心。
To explore the role of the bridged N atom for a possible proton transfer in the active site of hydrogenase, we tried to introduce a hydrogen bond into a couple of designed molecules.
为研究氢化酶活性中心氮桥结构中氮原子是否起到质子摆渡的作用，设计了在分子内引入氢键的结构。
Treasury bond futures with active trading provide good hedging tools for the market, but their delivery risk is getting more and more attention.
美国国债期货的活跃交易为市场提供了良好的避险工具，但是其交割风险也越来越受到关注。
Active stock and bond markets.
忙碌的股票和证券市场。
We won't know this until next week when the ECB publishes its bond purchase figures, but it is likely that the Bank was active in the markets in recent days.
这点要到下周央行公布债券购买规模才得知，但有可能的是，央行最近几天在市场多有动作。
In this paper, a thiacalixarene derivative with active double-bond was synthesized, and which was as a monomer copolymerized with other monomers by solution polymerization, yield 7 new copolymers.
用自行合成的带有可聚合活性基团的硫杂杯芳烃衍生物，分别与苯乙烯和甲基丙烯酸甲酯聚合，得到不同组成配比的两类七种新共聚物。
The variation of heat of formation and O-H bond lengths with the adsorption distance have been calculated . The results show that there are two active adsorption site on the model zeolite.
通过模拟计算确定了两个低能吸附位点及相应的吸附热，结果与实验值非常接近。
The variation of heat of formation and O-H bond lengths with the adsorption distance have been calculated . The results show that there are two active adsorption site on the model zeolite.
通过模拟计算确定了两个低能吸附位点及相应的吸附热，结果与实验值非常接近。
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