查询词典 modification

ABSTRACT Interior surface strengthening of deliberate parts is proved to be a tough and attention-drawing task in the material surface modification field.

精密零部件内表面的强化处理一直是材料表面改性研究领域一个倍受关注的难题。

The results show that coal tar pitch and PMB can be used to synthesize COPNA resin, the reaction mechanism of which is a positive ion-typed condensation polymerization catalyzed by acid. There exist many micro fibers with a uniform distribution in the COPNA resin. The fibers grow with increase of modification time, and then intertwist and amalgamate. Moreover, the COPNA resin possesses good thermo-stability and high coke value.

研究表明煤沥青能与PMB合成COPNA树脂，其反应机理为酸催化下的阳离子型缩聚反应；COPNA树脂的合成中出现很多微纤，随交联聚合程度的加深，微纤相互缠结并融合；COPNA树脂具有很好的耐热性和较高的炭收率。

Special attention should be paid when we apply the decomposition method to two-point boundary value problems, it is necessary to solve a algebraic system;It should be noted that a modification of inverse operator should be made when dealing with singular boundary value problems;Laplace transform and Pade approximants can be coupled to enhance the efficiency of the decomposition method.

比如，在求解两点边值问题时就需要特别注意，这时需要采用待定系数法，最后会涉及到系数方程组的求解；在处理奇异边值问题时需要重新定义逆运算；不少研究人员还把分解方法与Laplace变换和Padé逼近相结合来进一步提高分解方法的精度。

Such a simple view, though, needs modification to account for at least two important considerations: First, it must be recognized that professional management of the public's affairs involver not only management n the narrowest sense keeping the books, handling personnel decisions, implementing decisions which have been made elsewhere in the politico-socio-economic systems, etc.

即便是如此简单的观点也需要加以修改才能说明至少两个重要的问题。

Modification on the structure and characteristics of films was observed for the technology to be similar to that for ion beam enhanced deposition .

这种技术可以获得与常规束线离子束增强沉积相近的对薄膜结构和特性的改性作用。

Surface modification of 2Cr13 stainless steel was carried out using plasma immersion ion implantation combined with ion beam enhanced deposition technique.

对 2Cr13不锈钢表面进行了等离子体浸没离子注入与离子束增强沉积复合强化处理。

Ion exchange has slight effect on the crystal structure, composition and organic surface modification of attapulgite.

离子交换对凹凸棒土的晶休结构、成分和有机表面改性的影响很小。

S_ demonstrates that the modification of CTMAB to two layers of Lou soil is the coexist of both ionic exchange and hydrophobic bond m.

结果表明，土壤表面的CTMAB和Ca2+/2的总和可以作为一个简便有效的指标用来判断修饰机制的实质，它的研究证实了CTMAB对于塿土2层次土样的修饰是离子交换修饰和疏水键修饰共存的机制。

Sixthly, the effects of dealumination and modification of pore of the NH_4Yzeolite on isomerization reaction were studied.

6探索了NH_4Y型沸石分子筛的脱铝改性和孔道修饰的异构化反应效应。

Design process of an engineering structure is an iterative modification process.

工程结构的设计过程是一个反复修改的迭代过程。

When this condition occurs, inbound replication with the source partner is stopped on the destination domain controller and event ID 2042 is logged in the Directory Services event log.

计算机密码学是研究计算机信息加密、解密及其变换的科学，是数学和计算机的交义学科，也是一门新兴的学科。

Instructions: click on the thumbnails to see a larger image, then use the left-right arrow keys to scroll through the slideshow.

使用说明：滑鼠点在小图上即可放大观赏。开启后键盘左右键可用来换照片。