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Amide dehydrating agent in the presence of careful heating, can be transformed into nitriles.

酰胺在脱水剂存在下小心加热，可转变为腈。

Aminophenyl ketones can be synthesized from different anilines and nitriles in the presence of boron trichloride, or from anilines by Friedel-Crafts reaction.

邻氨基芳香酮则可以由不同取代的苯胺与不同的腈在三氯化硼的作用下生成，或者通过傅克酰基化反应得到。

By means of FTIR, the cellulose of walnut shell was liquefied and degraded under acid catalyst in the presence of phenol firstly.

以傅里叶红外光谱为分析手段，研究以苯酚为溶剂、酸催化条件下核桃壳纤维素降解过程中其主要化学基团特征随反应时间的变化。

Mesoporous tin dioxide (SnO2) was synthesized by thermal decomposition of the precursor obtained via a solvothermal method in the presence of SnCl4·5H2O, urea and ethanol.

采用溶剂热方法，以SnCl4·5H2O/尿素/乙醇三元体系合成了具有特定结构的前驱体，该前驱体经焙烧后得到了具有海绵状结构的介孔SnO2。

Effective corrosion inhibitor protects both steel AND bronze components,even in the presence of contamination by water AND solids.

即使有水份及其它污染物的存在，内含的抗腐蚀添加剂亦能有效保护钢及青铜组件，免受腐蚀。

Effective corrosion inhibitor protects both steel and bronze componentseven in the presence of contamination by water and solids.

即使有水份及其它污染物的存在，内含的抗腐蚀添加剂亦能有效保护钢及青铜组件，免受腐蚀。

Starch yields a blue color in the presence of iodine.

有磺存在时，淀粉即呈蓝色。

In the filed of thermal conduction,traditional meso-mechanics model are mainly based on particle of typical geometry such as sphere or ellipsoid,and a generally adopted premise is the assumption of perfect contact conditions at constituent interfaces.The literature on composite materials lacks today a proper theoretical framework permitting a thorough study of the conduction problem for composites with particles of irregular geometry such as polygon or arbitrary shape in the presence of a thermal contact resistance.

利用细观力学的理论和方法预测和分析复合材料的等效性能，揭示其细观结构与其等效性能的关系，为复合材料设计和性能评价提供理论依据和系统的分析方法，是现代细观力学研究中十分重要的研究课题。

The result showed in the conditions of 115℃ and 3.5h the oil sands were effectively extracted to obtain the oil content in the presence of 120(superscript #) solvent naphtha as extraction solvent.

实验结果表明：选用120溶剂油为抽提试剂，在抽提温度为115℃、抽提时间为3.5 h的条件下，可有效的把油砂油从油砂中抽提出来，从而根据重量法测得油砂油含率。

Aromatic solvent naphtha was obtained by two-stage synthesis from C9 fractions from ethylene cracking with boiling range of 100~200℃ in the presence of Lewis acid as catalyst.

以沸程在100~200℃乙烯副产C9馏分为原料，进行了以Lewis酸为催化剂的两段聚合法制备芳烃溶剂油工艺的研究。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。