查询词典 formaldehyde solution

By comparing the equivalent mobility method with the direct solution method and the reverse direct solution method, reverse direct solution method is adapted in solution process because it is more excellent than the others in complicated numeric calculation, and the universality, validity and extensionality of systemic solution are realized.

在分析比较等效导纳法、正向直接法和反向直接法的基础上，发现对需要进行大量数值计算的系统，反向直接解法最为优越，提出将反向直接法作为系统求解的基本方法，实现了系统求解的通用性、有效性和易扩充性。

First of all,we have given some of the basic concepts of differential equations, described the constant coefficient linear ordinary differential equation solution, for a class of second-order variable coefficient linear ordinary differential equation initial value problem, an approximate solution, the method is first unknown function of a definition for N sub-interval, and then in between each district within a constant coefficient ordinary differential equations similar to the replacement, the solution has been the problem as similar to the original analytical solution, and then gives a detailed second-order change order coefficient of linear homogeneous ordinary differential equation solution examples, the examples of the approximate method proposed in this paper is valid.

首先给出了微分方程的一些基本概念，讲述了常系数线性常微分方程的解法，针对一类二阶变系数线性常微分方程初值问题，提出了一个近似解法，本方法是先对未知函数的一个定义区间作N等分，然后在每一个小区间内用一个常系数常微分方程近似替换，所得到的解作为原问题的近似解析解，随后详细给出了一个求二阶变系数齐次线性常微分方程的解的实例，该实例说明本文提出的近似方法是有效的。

Color reaction was performed in organic solution-salt solution biphasic system. The organic solution was 1,2-Dichloroethane-Isoamyl alcohol mixture (V/V=96:4) added Bromophenol blue (per 100 mL added 0.05 g). The salt solution was 55%K2HPO4 aqueous solution added Na3CO3 (per 100 mL added 14 g), under the temperature of color reaction between 12℃ to 25℃.

显色反应在有机溶液－盐溶液两相体系中进行，有机溶液为每100 mL 1，2-二氯乙烷－异戊醇混合溶液（体积比96：4）加入0.05 g溴酚蓝，12~25℃显色反应条件下，盐溶液为每100 mL 55%K2 HPO4水溶液加入14 g Na2CO3。

In the acute toxicity experiments, the algal solution and breakup solution of the concentration of 96h-LC50 were 1.0×105cells/mL and 8.0×104cells/mL, respectively. In the subacute 7 days experiment of the larvae, higher of the algal solution has the inhibition effect on sparus macrocephalus larvae. The toxicity of algal solution was higher than that of breakup solution at the same concentration.

在仔鱼96h的急性毒性实验中，微小亚历山大藻对仔鱼的96h理论半致死密度分别为1.0105 cell·mL-1、8.0104 cell·mL-1，而在7d的亚急性实验中，高浓度藻细胞液对仔鱼的生长发育有一定的抑制作用，且相同浓度下，藻细胞液产生的毒性较藻细胞破碎液大。

For the Hopfield network in solving the traveling salesman problem offen getting unvalid and not optimal solution, this paper introduced a suitable radom initialization of the output values Vxi of permutation matrix to guarantee an effective solution, used the error produced by taking a larger step size and required new solution to be better than or equal to old solution so that the final result can jump out local minima to find the global optimal solution.

摘 要：针对Hopfield网络解旅行商问题经常出现无效解和局部优化解，本文给出置换矩阵的满足一定条件的元素Vxi作为初始值，以便得到有效解。此外，还利用较大的步长所产生的误差和对当前解必须优于或等于已有解的要求，使计算结果能从局部优化解达到全局最优解。

Typically,0.2 mmol of Cd solution, and 0.4 mmol of MPA solution were mixed in a 40 ml solution and the pH of the solution was adjusted to 10.0 by solution was palced in a three-necked flask and was deaerated.

通常情况下， 0.2浓度的镉溶液，和0.4浓度的MPA的混合溶液中40ml溶液和pH值的溶液是调整，以10.0的溶液放置在是在三口瓶中，并除去溶液中的气体。

Typically,0.2 mmol of cd solution, and 0.4 mmol of mpa solution were mixed in a 40 ml solution and the ph of the solution was 二氰基丙酸乙酯 to 10.0 by solution was palced in a three-necked flask and was deaerated.

通常情况下， 0.2浓度的镉环硫乙烷，和0.4浓度的mpa的混合溶液中40巯基丙酸甲酯溶液和ph值的溶液是调整，以10.0的溶液放置在是在三制作乙酸钙中，并除去溶液中的气体。

Such a process includes the preparation of an initial stabilized peptized solution including a titanium precursor material, an organic solvent, an acid agent, the mixing of said initial solution with a large amount of water, the pH of the obtained intermediate solution being less then 3, subjecting said intermediate solution and its dispersion to a heat-treatment, the exchange of water by an organic solvent with low surface tension to obtain a final solution that is finally dispersed.

这样一种方法包括制备包含钛母体材料、有机溶剂、酸介质之开头的稳定化胶溶溶液，将此起始溶液同大量水混合，所得到中间溶液的pH小于3，使此中间溶液及其分散体系经受热处理，用低表面张力的有机溶剂更换水来获得末了加以分散的最终溶液。

This study did not use formaldehyde, but instead of the xylene—formaldehyde resin as an acetal reagent.

一、前言酚醛树脂是最古老的合成树脂之一，其性能，例如瞬时耐高温性能是其他合成树脂所不及的，因而得到广泛应用。

The indoor air pollution of benzene series and formaldehyde is popular after decoration, especially that of formaldehyde.

室内装修空气污染普遍存在。

We were cousins—his grandfather was King of Scots,and his great-grandfather was Henry VII of England.

我们是堂姐弟——他的祖父曾是苏格兰国王，他的曾祖父是英格兰的亨利二世。

I do want to help you, but I am in a quandary now!

我是想帮你，但是我现在左右为难啊！