查询词典 countably additive class

We provide additive Schwarz methods for the mortartype rotated element, and prove that the condition number of the additive Schwarz preconditioned operator is proportional to , where H is the coarse mesh size and h is the fine mesh size.

我们提出了Mortar 型旋转Q1元的加性Schwarz方法，并证明了预条件子的条件数与（1+log）^2成正比，其中H与h分别是粗网格尺寸和细网格尺寸。

Based on the theory of shrinkage, capillary force theory, the influence of road concrete additives in common use on surface tension of water is studied, and the results show that the influence of water reducer is very small whereas shrinkage-reducing agent and air entrainer can reduce surface tension of solution significantly. The relation between surface tension and additive dosage are non-linear relation. Each additive has an obvious critical micelle concentration.

从混凝土收缩的基本理论——毛细管张力理论出发，通过道路混凝土外加剂对水的表面张力的影响研究发现，减水剂对水的表面张力的影响很小，而减缩剂和引气剂可以大幅度降低溶液的表面张力，溶液的表面张力随外加剂的掺量呈非线性形式降低，而且都存在临界胶束浓度。

Based on the analyses of the chemical and the physical characteristics of hydrogen peroxide, the effect mechanism of H2O2 additive on diesel combustion was put forward and proved by the heat release rate of the single-cylinder engine test. The experimental results on 135 diesel engine bench show that H2O2 additive is effective to improve diesel combustion, and the specific fuel consumption, particulate matter and NO are decreased obviously.

对过氧化氢的化学及物理特性进行了分析，建立了过氧化氢组液影响内燃机燃烧过程的机理模型，并且通过放热规律进行了试验验证。135单缸机的试验结果表明，过氧化氢组液的效果相当显著，可以同时降低油耗以及碳烟和NO的排放。

The results showed that the two synthesized compounds have good thermal stability; two synthesized compounds as additives in 5 cst possess rather good antiwear property and load-carrying capacity, and the antiwear ability of the additive loma is stronger than that of the additive boma; there is a pronounced synergism between the additives loma/boma and zddp in terms of the anti-wear property and load-carrying capacity.

发现两种化合物有很好的热稳定性；两种化合物作为润滑油添加剂在5 mm2/s基础油中有相当好的抗磨性能和承载能力，其中含有三嗪环的抗磨添加剂比不含三嗪环的抗磨能力好；两种抗磨添加剂均与zddp有很好的协同抗磨减摩作用。

By studying the membrane preparation process for the typical membrane materials of polystyrene and cellulose acetate as well as a new type membrane material of polyvinyl butyral,the effects of operating parameters on the membranes structure are determined.By the study on the thermodynamics involved in the ternary systerms of ScCO_2/solvent/polymer and the calculation of theoretical ternary phase diagrams,the phase demixing behavior during the membranes formation by ScCO_2 induced phase separation process are described.By studying thermodynamics involved in the quaternary systerms of ScCO_2/solvent/additive/polymer,the effect of a low molecular weight additive on the quaternary phase diagram and dimixing speed are revealed.

通过对传统膜材料聚苯乙烯、醋酸纤维素及新型膜材料聚乙烯醇缩丁醛进行ScCO_2诱导相转化制膜工艺的实验研究，给出了操作参数对膜形态结构的影响规律；通过研究ScCO_2/溶剂/聚合物三元体系热力学问题，并计算出相应铸膜体系的三元相图，对ScCO_2诱导相转化膜制备过程的分相成膜行为进行了分析与描述；通过研究ScCO_2/溶剂/小分子添加剂/聚合物四元铸膜体系的热力学问题，并借助于四元体系理论相图计算的结果，分析了小分子添加剂对相分离过程的影响。

On the base of review the development of lithium-ion battery and its additive in detail, carbon bisulfide(CS_2) was chosen as the film-forming electrolyte additive by theory calculation.

论文详细评述了锂离子电池及其添加剂的发展现状，通过理论计算，确定二硫化碳作为SEI膜成膜添加剂。

This essay tries to improve the performance of mineral additive agent and compound many kinds of existing chemic additive agent.

本文对水泥稳定类基层外加剂进行研究是在已有研究的基础上，对其进行了改良，并在此基础上复合了不同种类的化学外加剂。

The results of the reaction show that better regioselectivity is obtained when Cd2+ is used as additive and give stereoselective product when cinchonine is used as chiral additive.Keywords: NaBH4, Regioselective,Stereoselective,Benzoyl acetone,Metal ion

结果发现，不同的金属离子添加剂使反应出现不同的化学选择性，而Cd2+离子对苯甲酰丙酮的还原具有较好的化学选择性，同时在辛可宁存在条件下得到了对映体过量的产物。

Meanwhile,The distributed pattern of PURF particles is observed by microscope.The results show that the bearing capacity of cellular columniation is evidently improved by the infilling of additive.With the increasing content of additive,the compress strength of PURF was effectively enhanced f...

实验结果表明，泡孔支柱处的增强剂加强了其承载能力，有利于压缩性能的提高；随着增强剂用量的增加，PURF压缩强度和模量先增加后降低，即增强剂用量处于最佳用量范围内时，PURF体现最好的压缩性能；并随着纯聚氨酯硬质泡沫塑料密度的增加，其压缩性能有显著的提高。

In order to optimize an effective combined preservative applied to the orange juice preservation, the authors studied the synergistic effect of biological and chemical combined preservative which contained Nisin, potassium sorbate, EDTA and sodium isoascorbate in preservation of orange juice compared to preservation effect of each aforementioned additive in individual use. Results show that the growth of microorganisms can not be inhibited completely using each aforementioned additive in single use.

该文以天然生物防腐剂乳酸链球菌素、化学防腐剂山梨酸钾、乙二胺四乙酸以及食品抗氧化剂异Vc钠为原料，对通过复配后得到的各组复合型防腐剂在橙汁保鲜中的协同增效作用进行研究，并且与单一的防腐剂保鲜效果进行比较，得出一组适合在橙汁中使用的高效复合型防腐剂。

I can do simple painting, carpentry and plumbing.

我能做简单的油漆、木工和修水管等工作。

The motivations, notations and outline of this work are also given in this chapter.

从这个意义上讲，这些时滞是无害的。然后用实例说明这三个定理的应用和互不包含性。