查询词典 synthetic method

MMA is produced by the method of acetone-cyanhydrin mainly in our country. The synthetic route is complex, the technical line is long, and the yield is low with high cost after many steps. Hydrocyanic acid is used as raw material, the treatment of numerous waste acid is difficult . Furthermore, concentrated sulfuric acid consumed in this method corrodes equipments and pollutes the environment seriously.

我国MMA的生产以丙酮腈醇法占主导地位，合成路线复杂，生产工艺长，多步反应后产率低，成本高，其采用有剧毒的氢氰酸为原料，产生大量难于处理的废酸，所消耗的浓硫酸对设备腐蚀性大，对环境污染严重，因此开发新的MMA工艺路线很有必要。

According to the characters of turbidite sand body of Niuzhuang subsag, such as thin reservoirs, deep embedding, unstable distribution, high concealment and etc, and based on expatiating on the principle, method and key technique of the log constrained inversion, this paper summarized the inversion experiments fitting for the reservoir exploration, including multifactor calibration of synthetic seismogram, the found of original impedance and the choice of inversion method.

针对牛庄洼陷浊积砂体具有储层薄、埋藏深、分布不稳定、隐蔽性强等特点，在阐述测井约束反演原理、方法及关键参数的基础上，总结出包括合成记录在内的多元标定、初始阻抗的精细建立和反演方法的选择等方面的反演经验，并在实际应用中取得了良好的效果，为其他地区浊积砂体的储层预测及描述提供了借鉴经验。

This article founds synthetic indicator systems for sustainable development, which cover the economic system, the social system and the system of resources environments and include 33 variables. In this article two kinds of objective weight method: principal components analytic method and entropy value method have carried on assessment of indicator systems for sustainable development.

本文建立了涵盖经济、社会、资源环境三大系统包括33个变量指标的可持续发展综合评价指标体系，用主成分分析法和熵值法两种客观赋权法进行了各系统可持续发展能力变动趋势的测度。

The establishment of synthetic evaluation model of self-propelled gun is based on fuzzy synthetic evaluation method of AHP.

自行火炮综合评价模型的建立，基于层次分析法的模糊综合评判法。

Secondly, the author has set up the Factor Set, Factor Weight Set, Evaluation Set and Evaluation Matrix based on the Fuzzy Mathematics, therefore the quantification of expert's experiences is solved. Following the example of product design procedure consisting of designing, collating and checking, the Two-stage Fuzzy Synthetic Evaluation has been established in order to supply the evaluating method of design quality for drawing die-face. After two times of eligible analysis above, the synthetic optimizing design of geometry, material and process can be done with simulation.

以模糊数学为基础，通过确定影响覆盖件拉延模型面设计的因素集、因素权重集、备择集和评判矩阵，解决了专家设计经验知识的量化问题，并建立二级模糊综合评判方法，据此设计、校对、审核等技术人员可以共同对拉延模型面设计质量进行优劣评判和修改；在前面二次分析合格的基础上，利用有限元仿真技术进行几何、材料、工艺多因素综合的优化设计。

In this model, a parameterized method has been employed to decrease or eliminate vertical deflection and vertical refraction errors.4 For the long baselines of Crustal Movement Observation Network of China, using the GPS satellites orbits and stations positioning analysis software GAMIT opened up by MIT to do the single day GPS observation data processing, a synthetic solution model, which is called "the synthetic solution model of baseline vectors", has been built up with several single day baseline vectors calculated by the GAMIT software, to compute the three dimension movement velocities of sites.

对于长基线的GPS地壳变形监测网，采用MIT开发研制的精密GPS定轨定位软件GAMIT进行单天GPS观测数据的处理，提出了利用多期单天的GAMIT解算出的基线向量进行综合解算的模型："基线向量综合解算模型"，用以计算地壳监测站点的漂移速度，并通过实例验证了该计算模型的正确性和可靠性。

A mixture of synthetic E9—and Z9—C12: OAC in 8: 2 ratio shovs as aitive as its virgin female moth in the field biossay, The synthetic lure is used in monitoring technique uhich is superior to the old monltoring method like black light, sugar—vinegar lure, and so on, The "communication disruption" and mas...

通对人工合成性诱剂的活性测定、诱蛾效果比较、剂量筛选，持效期鉴定，测报上的应用以及迷向法、诱捕法防治试验等工作，明确了枣粘虫性诱剂具有诱蛾活性强，不污染环境无残毒，有利于保护天敌，对人畜安全，经济简便等优点，当前在害虫的预测预报中有极重要的利用价值，是一种无公害的害虫防治新技术。

Using this method makes the designed piping have the characteristics of the synthetic minimum of energy loss construction and mainteuance costs, and excellent technical quality. It shows that the application of the method to a steam piping design can achieve saving of operating cost by about 20 percent against the design made by non-thermoeconomic synthesis method.

采用该方法进行设计，可使热网的初投资、能耗及运行维护等费用综合最小，而且具有优良的技术性能，它与不采用热经济最优综合方法的设计相比，可做到平均节省运行成本20%以上。

According to the synthetic characteristics of the surface warship ,gives a general method for the synthetic functions of the surface warship .

结合水面舰艇综合作战性能特点进行分析，给出水面舰艇综合性能评价的一般方法，对新型水面舰艇的综合性能的评价有一定的指导意义。

An improved Adler method was used for preparing TAPPH〓. TAPPH〓 was synthesized in high yield by direct condensation of pyrrole with 4aminobenzaldehyde in refluxing propanoic acid with the presence of vitamin C. This new synthetic strategy for preparing TAPPH〓 can greatly extend synthetic methods for porphyrins containing amino groups.

我们通过对Adler法的合成条件进行改进，即在反应体系中加入还原剂Vc，由4-氨基苯甲醛直接合成了对酸敏感的TAPPH〓（1），提高了总收率，拓宽了Adler法的适用范围。

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。