丁

In this experiment, the depolymerization of chitosan by hydrogen peroxide was studied.

本实验使用过氧化氢来进行几丁聚醣之去聚合反应以制备低分子量几丁聚醣。

Results of our experiments showed that the depolymerization rate of chitosan depended on the reaction temperature, the reaction time and the concentration of hydrogen peroxide.

实验结果显示，几丁聚醣之去聚合反应受到反应温度、反应时间及过氧化氢浓度的影响，当反应温度为60℃，反应时间为两小时且过氧化氢浓度为2 M时，可得到分子量约四万的几丁聚醣。

In order to examine possible relations between freezing properties andthe number of hydroxyl groups in solute molecules, a differential scanning calorimeter (Pyris-Diamond DSC) was employed to study the thermal behaviors of polyalcohols aqueous, such as hydration properties, glass transition, and devitrification.

利用差示扫描量热仪，研究了乙二醇、丙三醇、1，3丙二醇、1，3丁二醇和2，3丁二醇水溶液的水合性质、玻璃化转变温度和反玻璃化转变温度，得出了这些性质与溶液浓度的关系。

At first, the polymerization characteristic of BMA was discussed in the paper, by contrast with MMA, using the instrument dilatometer. It was confirmed that the polymerizing activity of BMA was lower than MMA, and its polymerizing condition was stricter.

本文首先对甲基丙烯酸丁酯和甲基丙烯酸甲酯的聚合特性进行了对比研究，用膨胀计法测定了两者在不同引发条件下的聚合动力学，证实了甲基丙烯酸丁酯的聚合活性比甲酯要低，聚合条件更为严格。

The study to this condition also shows influence of the distance of the dimples to heat transfer.

通过多丁胞的数值研究进一步说明丁胞间距对流动换热能力的影响。

The Dinka and the Nuer are the two biggest tribes in the South, the Dinka constituting about 40 percent of its population and the Nuer around 20 percent.

在丁卡和努埃尔是两个最大的南方部落，丁卡构成其人口约百分之四十和百分之二十左右努埃尔。

In the paper the deterrent content and the concentration of diphenylamine dibuty l phthalate and centralite Ⅱ in finished product manufactured by two different methods were analyzed by high performance liquid chromatography, which can provi dereference for adjusting the technology of the propellant manufacture.

文摘：利用高效液相色谱仪分别测定了发射药在两种制备工艺中的钝感剂邻苯二甲酸二丁酯和二号中定剂的含量及邻苯二甲酸二丁酸在其中的浓度梯度分布，为调整发射药制备工艺提供了参考。

The Discalced Augustinians have their own constitutions, differing from those of the other Augustinians.

奥古斯丁的Discalced有自己的宪法，有别於其他奥古斯丁。

The method is characterized in that: mixture of macromolecular dihydric alcohol and a dihydroxybutyl-terminated polydimethylsiloxane is dehydrated, added with diisocyanate for reaction, then added with a bis propionic acid, a dihydric alcohol chain extender and a catalyst - dibutyl tin laurate, and is diluted by acrylic ester; temperature reduction and emulsion are performed on the mixture after reaction; chain extension reaction is performed in water by a multi-amine chain extender, and siloxane modified polyurethane dispersoid which contains acrylic ester monomer is prepared; and an initiator - potassium persulphate is added into the siloxane modified polyurethane dispersoid for emulsion polymerization.

特征是先将大分子二元醇与二端羟丁基聚二甲基硅氧烷的混合液脱水后加入二异氰酸酯，反应后加入二羟甲基丙酸、二元醇扩链剂和催化剂二月桂酸二丁基锡，并用丙烯酸酯进行稀释，反应后降温乳化，用多元胺扩链剂在水中进行扩链反应，得到含有丙烯酸酯单体的硅氧烷改性聚氨酯分散体，然后再通过加入引发剂过硫酸钾进行乳液聚合。

Martin/Universal Martin Drafting Board Top 31 1/2 in.

马丁/通用马丁起草委员会前37 1 / 2英寸x四十八英寸

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。