三度的

Methods The effect of factors such as reaction temperature, pH, formaldehyde-urea moleratio, contents of PVA and melamine upon the viscosity of the MUF resin, stability, water resistance and the quality of MUF resin.

方法反应温度、pH值、甲醛尿素摩尔比、PVA的用量、三聚氰胺的用量等对脲醛树脂胶液的粘度、稳定性、耐水性、胶合质量的影响。

In Part 3 we study the mutualism system with several delays Sufficient conditions are obtained for the existence of positive periodic solutions of the system by using the theory of Mawhin coincidence degree .

第三部分考虑了两种群带多时滞的互惠系统我们利用Mawhin重合度理论，得到了系统正周期解的存在性的充分条件，推广了文[28，29]的结果，并且删去[30]的某些条件。

In Part 3 we study the mutualism system with several delaysSufficient conditions are obtained for the existence of positive periodic solutions of the system by using the theory of Mawhin coincidence degree .

第三部分考虑了两种群带多时滞的互惠系统我们利用Mawhin重合度理论，得到了系统正周期解的存在性的充分条件，推广了文[28，29]的结果，并且删去[30]的某些条件。

The partial substitution of acids on the triazole-ring of polymer 10 may arise from difference in acid strengths or from varying degrees of steric hinderance during protonation reactions.

在酸部分取代对三氮唑聚合物10环可能产生的酸强度的差异，或从不同的反应过程中的质子立体阻度。

In the process of building up the system, all the following works are done: confirming the index system of the gas pipeline by the maximum quadratic mean deviation analysis, caculating the index weight by the means of AHP, bringing forward three easy and useful methods (TOPSIS, the effect function and the integration index) of the gas pipeline's engineering schemes' multi-valuation and at last the mathematical models of the maximum compatibility degree is introduced to integrate all the results of all methods above.

在构建这个系统的过程中，主要从事了以下一些工作：通过统计理论中的最小均方差法分析确立了输气管道指标体系；采用层次分析法对输气管道指标权重进行了分析计算；提出三种简单易行的用于天然气管道设计方案评价的新方法：理想点法、效用函数法和综合指数法；最后将决策理论中的最大兼容度模型用于输气管设计方案评价中。

In this paper, the theories of generation function and recursive relation in combinatorics is used to analyze the time complexity of some special recursive algorithm, with three conclusions reached simultaneously, which is of valuable reference to the analysis and research on algorithm.

提出了用组合数学中的母函数与递推关系理论来分析一些特殊的递归算法的时间复杂度，并同时得出三个推论，在算法的分析与研究方面具有一定的参考价值。

Weak gel is composed of the low-concentration polymer and crosslinker, the crosslinking mostly occurs among the polymer molecule and little within them, the system is a three-dimensional reticulation, the viscosity is between the 100 mPa.s and 3000 mPa.s.

弱凝胶是由低浓度的聚合物和交联剂形成的、以分子间交联为主及分子内交联为辅的、粘度在100~3000mPa.s之间，具有三维网络结构的弱交联体系。

The results show that the fibers with good dye ability can be obtained from blends containing certain amount of SIPE, which are made by using an appropriate proportion of cationic dyeable polyesters and recycled polyester.

结果表明：以适当比例和种类的CDP与PETRc共混，制得的三单体含量一定的共混纤维，能够实现阳离子染料常压染色；影响CDP/PETRc共混纤维实现常压染色的主要因素是共混纤维的结晶度和玻璃化温度。

Thedissertation discusses in detail on the implementation of the algorithm, and applies it toanalyze the scattering from the conductor objects, dielectric objects, and microstrip patchantenna. The solenoidal basis functions are adopted in the scattering analysis of dielectricobjects, which lead to a less number of unknowns for the same mesh as in the traditionalSchaubert-Wilton-Glisson basis functions.

第三种快速方法是多层快速多极子加速电磁分析算法，它应用在时谐电磁场问题时将存储量及计算复杂度都降低到O，并且适用于任意形状的网格离散，具有很强的灵活性，文中将这一加速算法应用到金属体、介质体、以及无限大底板的微带结构的电磁散射特性分析中。

Until the third stage, when subtropical high retreats completely from the SCS and the low pressure system over southern China moves southeastward and embeds itself in the low pressure zone over the northern SCS, strong tropical southwesterly flow brings in ample amount of moisture and causes moisture convergence over the southern SCS under the influences of the low pressure zone. Deep convections bloom due to sudden increase of low-level convective instability.

一直到第三个阶段，太平洋副热带高压完全退出南海，而华南低压中心移入南海北部的低压带，与强盛的热带西南气流结合，在南海南部形成强烈的西风与大量的水气集结，低层对流不稳定度快速增加，以致於产生旺盛的对流。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。