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- Yield of products was improved by control granularity. 采用控制产品粒度技术提高了产品收率。
- The addition of ozone to the catalytic oxidation of DCEA had distinct effects on yields of products. 因为受臭氧加入的影响,各项DCEA臭氧触媒氧化后的产物之产率有了明显的变化。
- Other than the attractive yields of the Notes, the efficient distribution network and the wide choice of products are key factors that account for the encouraging results. 除债券的息率具吸引力外,有效率的销售网络,以及多种可供选择的产品类别,是认购踊跃的主要因素。
- Four 3 thiomethylcephem intermediates were synthesized facilely from GCLE, by means of uniform design and HPLC tracing of reactions to give high yields of products. 以从青霉素化学转化得到的GCLE为原料,进行C-3位硫甲基官能化合成头孢菌素中间体。摸索了反应的条件,操作简单,收率高。
- Though the linear regression equation,grafting yield of product can be counted directly by contact angle. 推导出的线性回归方程,能通过接触角的测定直接计算出接枝率。
- This paper studied the catalytic N-alkylation of acetanilide with polyvinyl chroride-pyridine resin. The reaction conditions are mild and the yield of products is satisfactory. 研究了聚氯乙烯-吡啶树脂催化乙酰苯胺的N-烃基化作用,反应条件温和,产品收率令人满意。
- The yield of dichloro compound is over 78%.The total yield of 2, 6-dichlorotoluene is over 60% and the purity of product is more than 99.0%. 该工艺氯化采用复合催化剂,无需用任何溶剂,二氯化物收率大于78%25,2,6-二氯甲苯总收率可达60%25,纯度大于99%25。
- The distribution and yield of product undergo the proportion of molybdenum and tungsten in the bi-oxo-capped trinuclear molybdenum tungsten clusters. 该催化氧化反应产物的分布及其产率与三角三核双氧帽钼钨簇合物中钼钨的比例有关。
- These trees gave a high yield of fruit this year. 这些果树今年获得了大丰收。
- The yield of dichloro compound is over 78%.The total yield of 2,6-dichlorotoluene is over 60% and the purity of product is more than 99.0%. 该工艺氯化采用复合催化剂,无需用任何溶剂,二氯化物收率大于78%25,2,6-二氯甲苯总收率可达60%25,纯度大于99%25。
- Dimethoxybenzaldehyde was prepared from p-cresol by bromination , methoxylation and oxidation. The total yield of product was about 70%. 以对甲酚为原料,经过溴化、甲氧基化和氧化3步反应合成3,4-二甲氧基苯甲醛,收率达70%25左右。
- The reaction is carried out in the presence of orthophosphoric acid,with the yield of NPMI above 85%,and the purity of product above 95%. 该法以磷酸为催化剂,得到收率>85%25,纯度>95%25的N-苯基马来酰亚胺。
- The reaction is carried out in the presence of orthophosphoric acid, with the yield of N-PMI above 85%, and the purity of product above 95%. 该法以磷酸为催化剂,得到收率>85%25,纯度>95%25的N-苯基马来酰亚胺。
- DichLorophenoxy) ethyl-diethylamine was synthesized by using 3,4-dicmorophenol and 2-bromoethyldiethylammonium bromide under the PTC condition,the yield of product was 94%. 在相转移催化条件下,3,4-二氯苯酚和二乙氨基乙基溴合成增产胺,产率达94%25。
- The Knoevenagel condensation of armatic aldehydes and malononitrile or cyanacetic ester is carried out by DMF as solvent without catalyst.The process gives high yields of products. 本文报道了无外加催化剂条件下以DMF为溶剂芳香醛与丙二腈或氰基乙酸乙醇进行克脑文盖尔缩合反应,此法产率较高。
- That car went out of production five years ago. 那种汽车已经停产五年了。
- The influences of the various conditions on the yield are studied.When the concentration of KOH is 5%(weight) and reaction time is 8 h,the highest yield of product is 40.34%. 讨论了不同反应条件对产物收率的影响;在KOH的质量分数为5%25、反应时间为8.;0h时;产物的收率最高;为40
- Improve the yield of new product. 协助提升新产品良品率。
- Table 1 shows the 10 most important crops, their areas of production, their average yields of the last 3 years and their value of production (Comm. of Aust. 1991). 表1列有10种最重要的作物、其生产面积、过去3年它们的平均产量以及各自的产值(澳大利亚联邦,1991)。
- The total yield of such produce in a particular season or place. 收成在某一季节或地区该类产品的总产量