查询词典 N-phenylaniline

Using potassium persulfateas initiator and N, N′-methylenebisacrylamideas crosslinker, the graft copolymerization of acrylic acidonto modified cornhusk fiber was carried out.

将玉米秸秆进行提纯改性，采用过硫酸钾为引发剂、N，N-亚甲基双丙烯酰胺为交联剂，使其与丙烯酸接枝共聚合成农用高吸水树脂，通过试验对比最终确定最佳条件为改性玉米秸秆与丙烯酸的质量比为1∶6、丙烯酸中和度为70%、反应时间为4h、烘干温度为60°C；对最佳条件下制备的树脂进行了吸水倍率的测试；对秸秆预处理前后及接枝产物进行了红外谱图分析。

This code is not casually arranged, it actually represents the Frog Kok of Cotangent value, which is part of Frog heart right triangle and two right-angle-FE AE ratio, that is, N = ctg α= FE / AE , N, is turnout.

这个代号可不是随便排列的，它实际上代表了辙叉角的余切值，也就是辙叉心部分直角三角形两条直角边FE和AE的比值，即N=ctgα=FE/AE，N就是道岔号。

Interaction of Cucurbit [7] Uril with N,N'-Bisalkyl-1,3-(4,4-bispyridyl) Propanes

篇名 七元瓜环与N，N'-二烷基－1，3-（4，4'-二吡啶基）丙烷衍生物的相互作用

This study consists of three parts. Firstly the equivalently accelerative corrosive environment is determined through the analysis of statistic data of corrosion environment. Secondly the fatigue test is carried out under the constant amplitude cyclic loading for the specimens which are exposed in the corrosive environment for equivalent calendar time of zero year, 3 years, 8 years and 13 years. Four S-N curves with different corrosive time are obtained based on the fatigue experiment. Finally the regression method of S-N curves for experimental data is researched and a weighted least square fit is put forward in which the weigh of a group of test data is inversely proportional to the length of the confidence interval.

进行了以下几个方面的工作：(1)通过实测、统计、分析得到了当量加速环境谱；(2)完成了在当量加速环境谱下预腐蚀日历年限0年、3年、8年和13年的腐蚀试验，并进行了成组常幅疲劳试验，得到了不同预腐蚀年限下的S-N曲线；(3)进行预腐蚀后的S-N曲线的数据拟合方法的研究，提出了考虑置信区间长度影响的加权最小二乘法。

The codingoperator expresses the genes with N-decimal system floating numbers, and then the genes are divided into integer part and decimal part. The two parts are encoded into chromosomes respectively. The corresponding selection, crossover and mutation operators are designed with the theory of symbol encoding and the properties of N-decimal system floating numbers.

该编码算子首先将每个基因值用N进制的浮点数表示，然后将其分为整数部分和小数部分，分别重新编码组成染色体；相应的选择、交叉、变异算子采用符号编码的思想，充分利用N进制浮点数的特点进行设计。

The deflection of plate is trigonometric series as follows:∞∞ mπx nπy w=∑∑ A m =1 n =1 mn sin a sin b It is obvious, every term of this series is satisfied with the boundary conditions of quadrilateral simply supported.

取板的挠度为如下重三角级数∞∞ mπx nπy w=∑∑ A m =1 n =1 mn sin a sin b 显然，该级数的每一项都满足四边简支的边界条件。

A The degree of freedom equal to n-1 for any analysis, n is the number of observation in the data.

自由度等于的N - 1的任何分析， N是观察的人数在数据中。

The message says, because this AOL enters Chinese inland market to be less than a year, and most employee enters this company not full a year, accordingly this company compensates plan this to did not press a tradition " N 1 " N is plan of convention of working fixed number of year to carry out, compensate 3 monthly wages to regard demobilize as cost directly however.

有消息称，由于此次AOL进入中国内地市场不到一年，且多数员工进入该公司未满一年，因此该公司此次补偿方案未按传统的"N 1"N为工作年限常规方案实施，而是直接补偿3个月工资作为遣散费。

The center of denseness is in 27°00'-28°30' N, 122° 30'-124° 30'E and 28°00'-30°30'N, 124°00'-126°30'E.

中心渔场在27°00'-28°30'N，122°30'-124°30'E和28°00'-30°30'N，124°00'-126°30'E。

A ring of integers derived from the set of all integers according to the following rule: Let N be an integer greater than 1, and A and B be two other integers; if N is a factor of A?

由全体整数的集合按下列规则产生的整数环：设N为大于1的整数，A和B是两个其它整数，若N是A？

Shop assistant: Please check at the door.

店员：请您到门口柜台交费。

In the end, transportation of PAHs in the environmental matrix was preliminarily investigated and discussed according to PAHs data of soils and sediments from a certain region in Shanghai. The result indicated that there are two or more pathways on PAHs transportation in the environmental matrix.

最后，对上海特定地区内PAHs在环境介质中的迁移径途进行了分析讨论，结果表明上海市土壤和沉积物等环境介质中PAHs的迁移存在多种途径。