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The effects of catalyst, catalyst promoter, ratio and amount of catalyst and catalyst promoter, temperature, reaction time and pressure on the selectivity and yield of benzaldehyde have been investigated.

重点考察了催化剂种类、助催化剂种类、催化剂和助催化剂的配比和用量、反应温度、反应时间和反应压强等因素对苯甲醛的选择性和收率的影响。

Molar ratio of hydrogen to benzaldehyde was increased in consecutive hydrogenation process, which is beneficial to enhancing the selectivity of benzyl alcohol.

在苯甲酸甲酯加氢连续步骤中的氢醛比得到提高，有效地抑制了副产物甲苯的生成。

The epoxidation of of various olefins was carried out using LDH-F with Mg/Al=5 as the catalyst and H2O2 and benzonitrile as the oxidants. This catalytic system has excellent catalytic activity. The conversion and selectivity are both above 95% when using styrene, indene, allyl alcohol, and allyl chloride as the substrates.

以Mg/Al=5的LDH-F为催化剂，H2O2和苯甲腈为氧化剂对不同官能团化烯烃进行环氧化反应，结果表明，此催化体系具有良好的催化性能，在苯乙烯、茚、丙烯醇和烯丙基氯环氧化反应中转化率和选择性均在95%以上。

Challenging this solution, Bermúdez (2000) suggests that the selectivity problem may reemerge, since it isn't clear why in cases where there is a relatively low cost for holding a self-deceptive belief favored by our motivations we frequently do not become self-deceived.

在这些情况下，Josh对于他的最喜欢的巧克力有污点的证据会更为敏感，尽管他的渴求是它没有污点，因为犯错误的主观成本对他而言比之前更高了。

Therefore, it is a high-throughput and high-selectivity technique for biological sample pretreatment. In this review, the theory, advantages, characteristics and current status of TFC in bioanalysis are introduced and summarized.

为此，本文介绍了涡流色谱技术的原理及优势，并总结了不同涡流柱的特点及其在生物样品分析领域中的应用情况。

The method was used for the determination of proteins in human serum samples with good stability and high selectivity and the results obtained were in good agreement with those obtained by biuret spectrophotometric method

该方法的稳定性好、选择性高，直接用于人血清试样中总蛋白含量的测定，实验结果与常用的双缩脲法基本一致。

In this paper, principle and technique of volume holographic storage are presented such as volume grating formation, Bragg diffraction, and horizontal angle selectivity.

本论文介绍了体全息存储原理及技术，包括体光栅的形成和布拉格衍射、衍射效率、水平角度选择性，还介绍了相干光学信息处理系统、Vander Lugt 滤波器的形成过程，给出了多重匹配滤波器相关的运算过程，最后介绍了子波变换的定义以及光学子波变换。

The impact of the thickness of volume H-PDLC grating on the wavelength selectivity of Bragg diffraction are simulated numerically, as well as the theoretic relationships among the refractive index modulation, spatial frequency and the H-PDLC diffraction efficiency.

计算机模拟了体光栅厚度对于布拉格衍射波长选择性的影响，以及折射率调制深度、空间频率和H-PDLC光栅衍射效率的关系。

The process has mild reaction condition, high bromine utilizing rate, high selectivity and high yield.

本方法反应条件温和，溴的利用率高，选择性好，无副产物，收率高。

At atmospheric pressure and 00℃, after 100 laser pulses C2H4 conversed to butadiene with 100% selectivity.

根据表征和反应结果，讨论了C2H4在FePO4上的LSSR机理和影响LSSR性能的因素。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。