查询词典 preparing

A process for preparing the olefine sulfide includes addition reaction between sulfur monochloride and C3-C12 olefine under existance of low-carbon alcohol as catalyst to obtain addition compound, mixing it with C1-C15 haloalkane, sulfide of alkali metal, sulfur powder, and aqueous solution of emtrol, sulfurizing, dechlorinating, and refining.

一种硫化烯烃的制备方法，包括：(1)使一氯化硫和C 3 ～C 12 烯烃在低碳醇催化剂的存在下进行加合反应，生成加合物；(2)将(1)步的加合物与C 1 ～C 15 卤代烷、碱金属硫化物、硫磺粉、脂肪醇水溶液混合，进行硫化脱氯反应后，精制处理，得到硫化烯烃产品。

Having had a long association with the Jessup International Law Moot Court competition, I highly recommend this text to all students preparing for the Jessup.

作为长期与 Jessup 国际法模拟法庭比赛有联系的一员，我强烈推荐该书给所有正在准备参赛的学生。

It was systematically studied on the methods and technology of preparing,isolating chitin and chtosan by fermentation with Mucor rouxianus.

对用发酵法从鲁氏毛霉中制备、分离、提取甲壳素和壳聚糖的方法和工艺条件进行了系统研究。

This can be used to direct the preparing of the exchange-coupling multilayer films.

这对交换耦合多层膜磁体的制备有一定的指导意义。

So far, we have synthesized pentadecane diacid , which is a very important intermediate product during preparing muscone.

到目前，我们已经合成了制备麝香酮中重要的一步中间产物十五碳二羧酸。

The titled compound as an intermediate for preparing muscone is obtained by reacting a tetradecanedioic acid as the starting material with a chlorinating agent——chlorosulfoxide,followed by reacting the resultant reaction product on halogenomethylzinc .

采用直链十四碳二元酸为起始原料，先以氯化亚砜进行酰化，所得酰氯直接与甲基锌试剂反应进行甲基化，从而制得了合成麝香酮的重要中间体2，15-十六烷二酮，产物结构经1HNMRI、R确认。

Several kinds of preparing processes of the titania coated mica based nacreous pigment are discussed.

制备出金红石型钛含量较高的云母钛珠光颜料。

Napier's graduates have a high record of employment, demonstrating the University's achievement of its primary mission: preparing students for the world of work.

Napier 大学的毕业生就业率相当高，论证了 Napier 大学的宗旨：帮助学生为将来的就业做准备。

We were pleasure to do everything for her, washing clothes, preparing milk, replacing nappy etc.

我们乐于为她做任何事，洗衣服，冲牛奶，换尿布。

Test teaching results of many years proved that comprehensive application,such as field collection,marcket purchase,natural cultivation,simple inoculation and other materials for preparing slides and materials collection methods as well as temporary preservation,dry preservation at room temperature,cryodrying preservation and cryopreservation,could meet the need of slide making of fungus,bacterium,virus,nemathelminth and other typical disease in a long term.

多年的实验教学证明，综合应用田间采集、市场购买、自然培养、简易接种等制片材料采集方法与临时保存、室温干燥保存、低温干燥保存、冷冻保存等保存技术，可以长期满足真菌性病害各亚门、细菌性、病毒性及线虫性等典型病害制片材料的需要。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。