产下

The optimum reaction conditions were: at present of acetic anhydride, a stoichiometric quantity of nitric acid, at room temperature for 40 minutes. Nitration of chlorobenzene gave a,50% yield of mononitro compounds, and an ortho-para isomer ratio 0.20 in product distribution of chlorobenzene mononitration.

结果表明：硅钨酸催化性能较好，催化剂载体以纳米二氧化硅最好，反应条件中醋酸酐用量是主要影响因素；SiW_(12)O_(40)~(4-)／纳米SiO_2催化剂具有强对位选择性：在醋酸酐存在下，氯苯与等当量的硝酸室温下反应40分钟，氯苯一硝化产物中邻／对硝基氯苯异构体的质量比达0.2，产率可达50％。

Was applied to the AD reaction of eight olefins in PEG/NMO system according to the protocol of ligand 8. The yields and ees of the diols were 70～90% and 77～96%(except for trans-5-decene and ally naphthyl ether) respectively.

在与8相同的催化反应条件下，手性配体9催化八种烯烃的AD反应得到的化学产率和ee值分别为70～90％和77-96％（反式-5-癸烯和萘基烯丙基醚除外）。

The experiment results show that the yield of hexane catalyzed by the nano-fibrous catalyst was 4.7 times higher than that of PdCl_2/γ-Al_2O_3 catalyst. The hydrogenation ofα-tetradecylene, cyclohexene, nitrobenzol and styrene by the nano-fibrous catalyst was also studied, the selectivity to primary products of the hydrogenation of cyclohexene, nitrobenzol and styrene was 100%.

苯乙烯-丙烯腈共聚物负载纳米钯超细纤维形态催化剂在常温，氢气压力101.3Pa下催化α-己烯加氢时表现出很高的活性，催化剂PSAN-Pd10催化氢化α-己烯选择生成正己烷的产率在150 min就达到87%以上，与无机物负载的催化剂相比，加氢效果有显著提高，并且催化剂的重复使用性较好。

The studies showed that the optimum conditions of the reaction were the amount of the 75% gathers the phosphoric acid 30 mL,the mole ratio ofhexamethylene tetramine to nitrophenol was 2∶1,the reaction time was about 3.0 hours,the reaction temperature was about 105℃.

结果表明较佳反应条件是：在对硝基苯酚为3.5 g的情况下，75%的多聚磷酸用量为30 mL，n∶n=2∶1，反应时间为3.0 h，反应温度105℃，5-硝基水杨醛的产率可达68.1%。

Methods: Thirty ASA I nulliparous women were administered 10 ml bolus of epidural ropivacaine in the first stage of labor. A concentration of 0.5% ropivacaine was applied to the first woman, and the dosage to the next one was up-regulated or down-regulated one level in accordance to the previous woman's response to the concentration.

选择30例单胎足月初产妇，在进入第一产程活跃期时行硬膜外给予罗哌卡因10ml，第1例罗哌卡因的浓度为0.5%，下一产妇的药物浓度根据前一产妇有无运动阻滞情况来上调或下调1个浓度级。

The experiment results showed that the optimum reaction condition were as follow: the molar ratio of acrylic acid to octadecyl alcohol was 1.2:1, the amounts of solid super acid and hydroquinonone were 6.0% and 0.8% respectively, reaction temperature and time were 120℃ and 3h. In this condition, the percentage of esterification of octadecyl acrylate was 97%.

由实验得出的最佳合成条件是：丙烯酸与十八醇的摩尔比为1.2：1，固体超强酸及对苯二酚的质量分数分别为6%，0.8%，反应温度为120℃，反应时间为3 h，在此反应条件下，酯的产率可达97%。

The production was further verified with IR.The experiment results showed that the optimum reaction condition were as follow:the molar ratio of acrylic acid to octadecyl alcohol was 1.2∶1,the amounts...

由实验得出的最佳合成条件是：丙烯酸与十八醇的摩尔比为1.2∶1，固体超强酸及对苯二酚的质量分数分别为6%，0.8%，反应温度为120℃，反应时间为3 h，在此反应条件下，酯的产率可达97%。

The results showed that the yields of coke and dry gas decreased first and then increased ,and olefinic content in gasoline and C 3 olefinicity decreased by 2.0% and 1.2% respectively at the similar heavy oil conversion when the amount of que...

结果表明：在控制相近的重油转化深度下，终止剂用量占处理量 1 %、1 0 %和 1 6%时，焦炭和干气产率均先降低后增加，汽油中烯烃含量和C3 中烯烃质量分数则分别降低 2 。0和 1 。2个百分点，汽油中异正构烷烃比增加，二烯值降低，诱导期增加超过 1 0 0min ；终止剂注入点由提升管中部移至上部而其他条件不变时，汽油中烯烃和C3 中烯烃质量分数分别增加 4.2和 0 。6个百分点

Although LEDs do experience a gradual and permanent reduction in light output during their normal operating life - caused either by a reduction in the light-generating efficiency of the LED die, or a reduction of the optical path within the LED package - the Dialight street LEDs are expected to provide about 70 per cent of their original light output after 50,000 hours or 10 years, provided that they are not overdriven.

在正常操作下，LED必需要经历光输出逐渐减少的过程，而这个过程是会一直持续着的。导致光输出减少的原因可能是由于LED产生光的效率在降低，或者是由于LED压缩包内的光径在减少。不过，只要没有超负荷使用，Dialigh的LED路灯在工作50，000小时或10年后，还可以达到70%原始光输出的能力。

The final product Rimonbant was then obtained in 64% yield via chlorination of the acid with oxalyl chloride followed by treatment of the resultant acyl chloride with 1-aminoperidine.

氯与1-氨啶在三乙胺存在下缩合生成目标产物利莫那班，产率64%。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。