查询词典 modified bessel function

Paraffin wax is the research object in the thesis and is modified by oxidization, amidation and emulsification to produce a series of modified waxes including acylamide wax unfound home and abroad that can be applied in practical industries.

本文以石蜡为研究对象，通过对石蜡进行改性如氧化、酰胺化和乳化，得到一系列改性蜡，包括在国内外未见报道的酰胺化改性蜡，应用于实际工业生产中。

The unnoble metal Cobalt catalysts were selected in the reaction system. The study was both of theoretical significance of selective hydrogenation and practical significance of making full of abound bay oil resources in GuangXi province. Cobalt-based catalysts of Co-La/Al2O3 modified by La and Co-Fe/Al2O3 modified by Fe were prepared by impregnation. The selectivity and activity of catalysts were elvaluated with active test.

本工作是国家自然科学基金课题"α，β-不饱和醛选择加氢为不饱和醇多相催化剂的研究"(编号：20266001)的重要组成部分，选择的是非贵金属钴催化剂体系，该研究对于发展选择性催化加氢和充分利用广西丰富的桂油资源具有重要的理论和现实意义。

This User Agreement shall not be canceled, modified, amended or in any way altered, nor may it be modified by custom and usage of trade or course of dealing.

这个协议用户不得取消修改，修改或以任何方式更改、它也可能是由习惯和使用改性贸易或交易。

At present, effects caused bygenetically-modified products on environment as well as food safetyare not concluded yet, so consumers and policy-makers in manycountries have to put careful consideration. Trade dispute ongenetically-modified products arised between European Union and USis a typical discrepancy in attitude.

目前，由于转基因作物对环境以及食品安全等方面的影响尚无定论，因此，对于大多数国家的消费者和决策者来说，必须慎重考虑，有时甚至出现严重抵制的情况，正如欧盟与美国的转基因产品的贸易争端。

Coherent interference can be suppressed by the EMCMVB efficiently. The EMCMVB first gets the modified signal subspace by using the estimated arrival angles of coherent interferers and the eigenstructure of the correlation matrix, and then projects the MCMVB weight vector onto the modified signal subspace.

EMCMVB是利用估计得到的相干干扰方向和阵列信号相关矩阵特征分解来得到修改的信号子空间，再把多约束最小方差波束形成器的权矢量向修改的信号子空间投影来得出新的权矢量。

Chest excursion of 25 normal subjects at Louis' angle and xiphoid process were measured with traditional-tape and modified-tape by three physical therapists. The procedures and methods of measurements, either traditional-tape or modified-tape, were standardized.

由三位物理治疗师分别使用传统皮尺和改良皮尺，在鲁易士角和剑突两处，测量25位正常的受试者的胸腔活动度，测量的方法和程序，不论是使用传统皮尺或改良皮尺，都是一致的。

At the aspect of the fade and the average wear, the bakelite modified by the chemigum was better than the bakelite modified by the bunas; When mixing the kevlar fiber and steel fiber their"cooperation effect"happened easily, especially, in the proportion of one to four, the friction materials had the better tribology performance; It was demonstrated that Sb2S3 played a role of binding adhesive of friction materials in high temperature, which could reduce the content of the agglomerant, but it was a higher price material, mixing the petroleum powder and CuS in appropriate proportion would replace it in friction

应用造粒技术，采用颗粒包层的方法，改变摩擦材料内部结构，使摩擦材料由配方比例设计到配方与结构综合设计的转变成为可能，将为研制新型摩擦材料探索出一条新的思路。

As to the curing reaction of the modified phenolic epoxy resins, there is the etherification reaction between phenolic hydroxyl groups and epoxy groups. When the secondly modified epoxy resins are cured at higher temperatures respectively, the absorbance increasing at 1670Cm〓 and 1640Cm〓 are indicative of aminolysis reaction.

对于改性酚醛环氧树脂的固化反应，有酚羟基和环氧基间的醚化反应，二次改性环氧树脂在较高的温度固化时，1670Cm〓和1640Cm〓吸收峰的增加说明有氨解反应。

SBS modified asphaltic concrete roads has the predominant capability than other traditional asphaltic roads and other modified asphaltic roads .

SBS改性沥青混凝土路面由于具有其他传统沥青路面和其他改性沥青路面无法比拟的优越性能，目前已得到了公路工程界的广泛关注和高度重视。

SBS modified asphaltic concrete roads has the predominant capability than other traditional asphaltic roads and other modified asphaltic roads .At present, it has gained extensive attention and altitudinal regard from the chaussee industry.

SBS改性沥青混凝土路面由于具有其他传统沥青路面和其他改性沥青路面无法比拟的优越性能，目前已得到了公路工程界的广泛关注和高度重视。

Molecular Distillation is a kind of high vacuum distillation method, which is suitable for the separation of high boiling, heat sensitivity and viscidity products.

分子蒸馏技术是一种在高真空条件下进行的连续蒸馏过程，适合于分离高沸点、热敏性及具有生物活性的混合物。

They are to the Noughties what yuppies were to the Eighties .

那在六十年代是时髦的，但在八十年代肯定是过时了