查询词典 preparing

With oxalic acid and hexamethylenetetramine as the catalysts, and phenolic resin and tetraethoxysilane as the starting materials, a two-step sol-gel processing is developed for preparing Si〓N〓/SiC precursors with homogeneous microstructure composed of nanometer sized particles.

用草酸和六次甲基四胺为催化剂，酚醛树脂和正硅酸乙脂为原料，探索出了制备结构均匀而精细的Si〓N〓／SiC前驱体的溶胶—凝胶两步法。

In much of the developing world, women produce most of food consumed by their homes, and are generally responsible for processing and preparing food for their HHs.

在大多数发展中国家，妇女是家庭食物的主要生产者，她们负责为家庭加工和准备食物

President Bush had just been re-elected and was preparing his triumphal second inauguration that was to mark the high-water mark for neoconservatism.

总统布什刚刚连任，并准备他的第二任获胜演说，继续为新保守主义鼓吹其功绩。

Mrs. Hiller from across the hall, who takes care of Lily after school, keeps preparing yucky healthy snacks for her.

Mrs。 Hiller会在她放学后照顾她的一切起居，准备既好吃又健康的点心给她吃。

She spent hours preparing a defense for Buckbeak, a falsely-accused hippogriff, and later began to take an interest in the plight of house-elves.

她花了很多时间来准备被诬告的鹰头马尾有翼兽巴克比克的辩护，后来又开始对家养小精灵的境遇发生兴趣。

These methanols were treated with BF3 in CH2Cl2 to generate the diferrocenylmethyl carbocations. Without separation from the reaction mixture, the ions were treated with some amines RNH2 [R=C2H5, n-C3H7, n-C4H9, HOCH2CH2, HOCH(CH3)CH2, HOCH2CH(C2H5)] to afford the ferrocenylamines in high yields. The present methodology for preparing α-ferrocenylamines from α-ferrocenyl alcohols enjoys such advantages as simple procedure and inexpensive starting materials.

它们对酸的敏感性很高，与BF3在二氯甲烷中作用可形成稳定的二茂铁基甲基碳正离子，无需从溶液中分离出来，便可与胺RNH2[R=C2H5，n-C3H7，n-C4H9，HOCH2CH2，HOCH(CH3)CH2，HOCH2CH(C2H5)]作用得到产率颇高的二茂铁基胺，这种由α-二茂铁基醇制备α-二茂铁基胺的方法具有简单、快速和原料廉价的特点。

Squeezing and preparing a plate underframe and a upper holdfast with support legs respectively, pre-sintering and final finishing the underframe and upper holdfast respectively, then welding the underframe and the upper holdfast of upper holdfast into one unit, finally heat treating the welded one unit product under the temperature of 150-650DEG C.

分别挤压制成一个平板形底架和一个带有支撑腿的上支架，将底架和上支架分别预烧结、精整，然后，再将底架和上支架的支撑腿烧结焊成一体，最后在150～650℃的温度下将焊接为一体的产品进行热处理。

Here are three tips for preparing for your next chat with a head honcho

这里给你3点建议，可以让你下次和老板轻松交流。

Subject to financing, the Second Stage will proceed with each Finalist team receiving an honorarium toward their Second Stage competition costs, which will include design responses to Jury and community comments regarding their First Stage designs, and preparing a study model of their design.

除融资，而第二阶段将着手对各入围获得第二阶段比赛的费用，其中包括设计反应，陪审团和社区的意见；第一阶段的设计和准备他们的设计模型的研究团队的酬金。

All we can do is to hope for the best, while preparing for the worst.

我们能做的就是抱最好的希望，做最坏的打算。

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。