查询词典 chemists

Nobody could believe it when we got this result.Franz Rohrer,Jülich Research Centre, GermanyBut the good news is tempered with a warning. As co-author Franz Rohrer of the Jülich Research Centre explains, the observations also show that atmospheric chemists don't fully understand the complex reactions that control the generation and destruction of hydroxyl radicals in our atmosphere.

但是也有个坏消息：报告的合著者、Jülich研究中心的Franz Rohrer认为，从另一个角度来看，观测也说明，大气化学家还没能充分理解我们大气中这些氢氧自由基产生、消亡之间的复杂反应。

As a result, the medicinal chemists have focused their attention on designing and preparing new L-nucleoside analogues to search for more powerful and securer new antiviral agents.

药物化学家们对此产生了极大的兴趣，进一步开展了新型L型核苷类化合物设计、合成的相关研究，以便筛选出更安全有效的抗病毒试剂。

The Swiss chemists think that the catalyst first draws the sensitizer to its surface and holds it there.

瑞士化学家认为，催化剂首先把敏化剂吸到它的表面并附着在那里。

They immersed a lead object first in copper acetate (a compound made by letting vinegar corrode copper), and then in a silver solution created by dissolving silver chloride in dilute ammonia (which ancient chemists made from urine).

它们首先把铅制品浸没在醋酸铜（通过醋酸腐蚀铜而制得的化合物）中，然后放在银溶液中，银溶液是通过把氯化银溶解在稀释的氨水中而制得的。

Many chemists and material specialists are apply themselves to this field. It will make the biology engineering and the function material into vastitude development.

目前国际上不少化学家和材料学家正致力于这方面的研究，这将是一个使生物工程和功能材料具有广阔发展前景的领域。

As chemists began to pry out my secret they discovered my virtuosity.

化学家开始探讨我的秘密，他们发现了我的精湛技巧。

As an illustration of the difficulty, it may be mentioned that two German chemists, Heinrich Wieland and Adolph Windaus, were awarded Nobel Prizes in 1927 and 1928, partly for determining the structures of a few steroids, and these structures were later shown to be wrong!

做为其难度的一个例证，或许可以提到两个德国化学家，Heinrich Wieland和Adolph Windaus，他们获得了1927年和1928年的诺贝尔奖，部分原因就是测定了一些甾体的结构，而这些结构后来被证明是错误的！

The E-TOF will also be feasible and practical to assist chemists in screening the optimal reaction condition or evaluating the overall efficiency of different catalytic systems for a specific asymmetric reaction.4.For the first time,we explored chiralγ-hydroxy-α,β-acetylenic esters,which were prepared via asymmetric alkynylation,as key intermediates to the synthesis of chiralγ-butyrolactones. This convergent and enantioselective approach to chiralγ-butyrolactones is practical and easily handled with protecting group free.

这一概念包括反应产率、对映选择性、配体用量以及反应时间四个重要反应参数，不仅适用同一反应不同催化体系的横向综合性评价，而且适用于某一特定反应催化体系的优化过程，有助于研究人员选择最佳的反应条件。4、我们发展了以手性γ-羟基-α，β-炔酸酯为关键中间体完成了手性γ-丁内酯类天然产物的对映立体选择性全合成，该关键中间体能够以我们的催化体系方便的对映选择性合成，之后的官能团转换方法成熟，易于操作，无需进行繁琐的官能团保护和脱保护过程，绿色经济。

These centers are capably staffed by dentists and graduate chemists, metallurgists, ceramic engineers and laboratory technicians.

这些中心的职员由牙医、化学家、冶金专家、烤瓷工程师和实验技师组成。

These centers are capably staffed by dentists and graduate chemists, llurgists, ceramic engineers and laboratory technicians.

这些中心的职员由牙医、化学家、冶金专家、烤瓷工程师和实验技师组成。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。