reduction 考研四级六级

You will have a reduction for cash.

付现金可以打折扣。

It is synthesized by oxidation of isocitrate, coupled to the reduction of NAD.

由异柠化而来，同时伴有NAD的原。

The increase in indirect taxation is intended to neutralise the reduction in income tax.

增加间接税是为了抵消所得税的少。

They are lobbying for a reduction in defence spending.

他们正在为少国防开支而游说议员。

The target compound was synthesized from N-benzyl protected aminoacetophenone through hydrogenation,benzoylation and reduction.

以氮-苄基保护胺基酮为原料，经氢化，苯甲酰化，原三步合成双苯甲酰沙丁胺醇酯。

Reduction of azides is an important method to introduce amino group to organic molecules.

叠氮原是向有机分子中引入氨基的重要方法。

These on reduction with NaBH4 gave exclusively cis-3-heterocycle substituted chroman-4-ols in good yields.

【文摘】3,3-Dibromochroman-4-ones on reaction with different heterocyclic secondary amines gave 3-substituted chromones.

METHODS Terazosin hydrochloride was synthesized from anhydro-piperazine via acylation,reduction,amination,salification etc.

方法以无水哌嗪为起始原料,经酰化、原、胺化、成盐等反应制得盐特拉唑嗪。

The proposed troop reductions were a useful bargaining counter in the disarmament talks.

裁兵员的提议是这次裁军谈判中一个有用的讨的筹码。

A reduction in condensation is accomplished by the use of steam-jackets.

使用汽套就能达到降低冷凝。

In this reaction,besides substitution products thiophenol etc,the reduction product benzene is formed.

反应中，除生成笨硫酚等取代产物外，生成原产物苯。

Cuprous chloride is an important inorganic fine chemical product,which was produced by nantokite reduction method.

[摘要] 氯化亚铜是一种重要的无机精细化工产品。

The THFA product of hydrogenation in common pressure has been used in enzymatic reaction and expressed the same result as that of THFA from Sigma, the cost of reduction by hydroborates is lower.

常压氢化法的产品已用来代替进口试剂作为酶促反应的辅酶，但硼氢化物原法成本最低，且能合成满足酶促反应要求的产物。

In order to prevent the reduction of the working accuracy of S1-280 Type Lathe that is made from overwear of main shaft bush bearing, it is substituted with rolling bearing.

原车床主轴支撑滑动轴承轴瓦严重磨损,加工精度降低,故改用滚动轴承支撑。

This article makes comparative analysis of the sectorization for the sprinkler system used in high-rise building and approaches to the details for pressure reduction and choice of fire-fighting pumps.

该文对高层建筑自动喷水系统的分区进行比较分析,针对压措施和消防泵选择的一些细节进行了分析和探讨。

How to perform the SOC test with reduction the development cycle time and production cost without scarifying the performance is the challenge confronted by design engineer and test engineer.

如何在缩短设计周期、降低芯片成本而又不损失芯片性能的前提下完成SOC系统芯片的测试是芯片设计工程师和测试工程师当前所要面对的挑战。

Sugar alcohol (alditol) An alcohol derived from a monosaccharide by reduction of its carbonyl group (CO) so that each carbon atom of the sugar has an alcohol group (OH).

单糖的羰基(CO)原得到一个醇．继而糖分子的每个碳原子都连有一个羟基(OH)。

An analytical study and numerical simulation of the pyrolysis chemism and the release of volatiles of micronized coal, accompanying NOx reduction during its recombustion in EFR, has been conducted.

对立式管式携带炉内再燃原NO过程中超细煤粉热解化学机理及挥发份的释放进行了分析和数值模拟研究。

Through the reduction of friction force and deformation force between the steel wire and die,the tensile failure problem of steel wire workblank during the stamping process was resolved.

膨胀管的膨胀过程是一种高度非线性行为,解析方法虽然可以近似求出变形力的大小,但很难对膨胀过程进行全面求解。

Abstract Chloroamine T oxidization resin, a new solid phase agent for iodination is prepared.The synthesis conditions are studied and the oxidation reduction properties of the resin are determined.

摘要 将化剂氯胺 T的功能基团引入高分子载体上 ,合成了氯胺 T型化树脂并测定了它的化 原特性。