查询词典 direct-axis

The catalytic effects of 1a and 1b on the intermolecular direct asymmetric aldol reaction were evaluated in organic solvents and in water respectively. The activity of 1a was higher than that of 1b.

研究了1a和1b分别在有机相和水中催化分子间直接不对称Aldol反应的性能，发现具有较长烷基链的1a比具有较短链的1b催化活性高。

Through experiment, we have found that the combination of naphthol/sodium naphtholate is a high efficient bifunctional catalyst for direct aldol reaction.

通过实验，我们发现并筛选出了一组活性较高的β-萘酚和其钠盐双功能催化剂，该方法不需要预先活化Aldol反应的底物就能直接反应，且反应可在室温进行，条件温和，速度快，收率高达98%。

The times change, in the past warehouse after transformed massively changed beyond recognition, was born the appearance brand-new compound commercial facilities "the hakodate history building", the import grocery shopping center "Jin Sen the ocean hall" as well as the dining room, the factory direct sale beer dining room "the hakodate alehouse" and so on, and set up as an attachment other each kind of facility.

时代变迁，往昔的仓库经大规模改造焕然一新，诞生了面目全新的复合商业设施「函馆历史大厦」、进口杂货商店区「金森洋物馆」以及餐厅、工厂直销啤酒餐厅「函馆啤酒馆」等，并附设其它各种设施。

According to algebraic property that a direct sum of Galois fields is isomorphic to a finite ring,the linear block code for multiplexing systems is proposed.

依据有限域直和与有限环同构的代数性质，对多路复用系统构造线性分组码。

To overcome the shortcomings of existing algorithms, the distributed parallel reactive power optimization algorithm based on sub-area division of the power systems is proposed according to the distributed and decentralized characteristics of the power system. Here, multi-objective function and soft constraints are modeled using fuzzy sets, and the multi-objective reactive power optimization problem is solved by the direct nonlinear primal-dual interior point algorithm.

针对目前无功电压优化算法存在的不足，根据电力系统分布、分散的特点，提出了基于电网分区的分布式并行无功优化算法，并对其进行了多目标、软约束的模糊化处理和离散控制变量的罚函数处理，利用直接非线性原—对偶内点法寻优求解。

As a direct consequence of their work experience, many workers feel alienated from their work and their firm

作为他们的工作经验的直接后果，许多工作者感觉与他们的工作和他们的企业疏远

However, direct evidence of alimentary transmission and infection in mammals is lacking.

然而， 在哺乳动物中缺乏饮食传播和感染的直接证据。

There are many types of fuel cells such as Metal hydride, Alkaline, Direct methanol fuel cell and etc with different characteristics.

有许多类型的燃料电池，如金属氢化物，碱性电池，直接甲醇燃料电池等具有不同的特点。

The possible mechanism for this direct alkylation has preliminary studied as well.

并对反应的机理进行了初步研究。

All too often they don't experience the direct consequence of the choices they make.

往往他们没有经验的直接后果，他们作出的选择。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。