查询词典 synthetic method

After being perfected, the technology of ultraviolet cathodoluminescence spectra might become an effective method for differentiating synthetic diamonds and natural diamonds, or synthetic diamonds from different company, or even synthetic diamonds from the same company but from different crops.

经进一步完善后，紫外阴极荧光谱技术有望成为鉴别天然和合成钻石、不同公司合成钻石或同一公司不同批次合成钻石的有效方法。

We have successfully synthesized hydrocarbonbearing inclusions in carbonate at the temperature and pressure of 150 ℃ and 40 MPa, which are near the condition of natural reservoir underground 4 kmAll synthetic hydrocarbonbearing inclusions have been analyzed by microscope and microfluorescence and fourier transform infrared spectroscopyThe results show that the synthesized hydrocarbonbearing inclusions are very similar to those in real reservoirsOur experiments give us four important insights, including:(1) immiscibility of oil and water is the main reason for hydrocarbonbearing inclusions and aqueous inclusions distributed in different fractures;(2) rapid accumulation of oil and gas can be recorded by fluid inclusions;(3) the study of synthetic hydrocarbonbearing inclusions at the temperature and pressure of real reservoir will offer references and standards for the analysis of fluid inclusions in reservoirs;(4) experiment of synthetic hydrocarbonbearing inclusions is a good method for understanding the mechanism of oilwaterrocks interreaction in reservoirs.

文中报道在实际储层温压条件下(150 ℃，40 MPa，大约4 km深度)成功合成了碳酸盐岩烃类包裹体。通过对合成烃类包裹体的显微观察、荧光分析和傅里叶变换红外光谱分析，证实合成了烃类包裹体，且与真实储层中的包裹体具有相似特征，探讨了油水不混溶条件下的流体包裹体捕获机制。实验研究给出4点重要启示：(1)油水不混溶是造成烃类包裹体和水溶液包裹体分带的主要原因；(2)油气快速成藏过程可以被流体包裹体记录；(3)实际储层温压条件下，合成烃类包裹体实验研究有望为储层包裹体分析提供依据和标准；(4)人工合成烃类包裹体为研究含油气条件下储层水岩作用机理提供了一种有效手段。

Methyl phenyl glyoxylate was prepared firstly by reaction of 2-methyl benzoyl chloride with NaCN. The reaction of 2-methyl phenyl glyoxylate with methanol gave the target product methyl 2-methyl phenyl glyoxylate. An improved 3 step synthetic method of methyl 2-methyl phenyl glyoxylate was studied. The optimization conditions were presented.

以2-甲基苯甲酸为原料，酰化后与氰化钠反应生成2-甲基苯甲酰腈，经甲酯化生成2-甲基苯甲酰甲酸甲酯，改进了三步合成2-甲基苯甲酰甲酸甲酯的方法，并对反应时间、反应温度等影响因素进行了优化，确定了合成反应中的最优化条件。

A new convenient synthesis of a series of 1-aryl-2-propanones using aromatic amines as precursors, via diazo reaction and improved Meerwein arylation reaction under mild conditions, was achieved. In addition, 1-[3,5-bisphenyl]-2-propanone is a new compound among the synthesized compounds. This approach is an efficient synthetic method for the aryl-propanones with the different substituting groups.

以芳香胺为原料，经重氮化和改进的Meerwein芳基取代反应，合成了一系列的1-芳基－2-丙酮，其中1-（3，5-二三氟甲基苯基）2-丙酮是一个新化合物改进后的方法简化了合成步骤，提高了收率，可方便地用于在苯环上具有不同取代基的芳基丙酮的合成。

Therefore, the research of synthetic method of flavonoids has the important value of scholarship and application.

因此，研究异戊烯基黄酮类化合物的合成方法具有重要的学术和应用价值。

This paper reported the synthetic method of polymethine styrylcyanines from benzotellurazolium iodides.

本文首次报道了由苯并碲唑季铵碘盐合成多次甲基苯乙烯菁的方法。

Because there are many factors which affect the seakeeping of ships, moreover the seakeeping is not the result that single factor affects , but is the result that all factors affect together , we must look for a scientific synthetic method to evaluate the seakeeping of ships based on the effects of all factors. Only by this way could we obtain a correct conclusion that would give the ship designr and masters an effective guidance.

由于影响船舶耐波性的因素较多，对船舶耐波性的影响，不是单因素的影响，而是所有因素共同作用的结果，因此必须在综合考虑各种耐波性因素的影响的基础上，寻找到科学的耐波性综合评价方法，对船舶的耐波性做出系统评价，才能得到准确的结论，才能对船舶的设计与航行做出正确的指导。

RNA. American biochemists Kornberg with the United States biochemists Ochoa synthetic method used was obtained DNA and RNA.

美国生物化学家科恩伯格与美国生物化学家奥乔亚用人工合成的方法制得了DNA和

We developed a new synthetic method to produce Alq_3 with high purities (99.91 - 99.99 %) and high yields up to 98 % based on ultrasound.

本文用超声辐射法在常用有机溶剂中，简单合成了纯度达到99.91～99.99%、产率达到98%以上的8-羟基喹啉铝。

The one-carbon unit transfer reaction is carried out by reacting with Grignard reagent, provided new synthetic method for 5 class of 19 kinds of ketone, and the influence factors, for example, the reacting mechanism, the condition, etc.

单、双苯并咪唑盐和单、双Grignard试剂的变换组合实现的系列一碳单元转移反应，为多类型酮化合物提供了开阔的合成视野。

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。