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The invention provides a bipolar plate for fuel cell and a surface nitric-nickel-chrome film preparation method which belong to fuel cell technique field.

一种燃料电池用双极板及其表面氮镍铬薄膜制备方法属于燃料电池技术领域。

A novel preparation technology of spherical cellulose was studied in this paper.

研究了一种简单、周期短的制备球形纤维素的工艺。

De moment, only we think about the party of the Celt and about these three points, besides we have clear that a victory would be the best preparation for this party.

暂时我们还是只关心下周日和Celta的比赛，还有那3分。我们很清楚每一次的胜利是对下一场比赛最好的准备。

The preparation process includes the following steps: dissolving activator and RE oxide in the molar ratio of 0.01-0.02 in concentrated nitric acid and heating to dry, dissolving the obtain RE nitrate in deionized water to obtain solution of RE nitrate; dissolving soluble tungstate and surfactant in deionized water to obtain tungstate solution; mixing the RE nitrate solution and the tungstate solution through stirring to reaction for 25-60 min to obtain white precipitate; hydrothermal reaction of the precipitate in a reaction kettle at 100-260 deg.c for 24-72 hr; centrifugally separating, washing and drying to obtain the product.

浓硝酸的加入量保证稀土氧化物溶解就可以，过量的硝酸可以加热除去；将可溶性钨酸盐和表面活性剂溶解于去离子水中，得到钨酸盐溶液，表面活剂性的加入量为反应原料重量的0-30wt％；将稀土硝酸盐溶液加入到钨酸盐溶液中搅拌，发生沉淀反应，磁力搅拌时间为25-60分钟，得到白色沉淀；将含有沉淀物的溶液作为前驱物加入到反应釜中，发生水热反应，反应温度为100-260℃，反应时间为24～72小时；离心分离，洗涤，干燥，即得所需产物。

The process of enzymatic hydrolysis and centrifugation in the preparation of walnut oil by aqueous enzyme were researched.

主要研究了水酶法提取核桃油的酶解和离心工艺。

OBJECTIVE: To evaluate the effectiveness of swim-up and gradient centrifugation preparation techniques on intrauterine insemination.

目的：系统评价上游法和密度梯度离心法在宫腔内人工授精中的应用，比较两种精子优选法的优劣。

Cepheid's easy-to-use systems integrate a number of complicated and time-intensive steps, including sample preparation, DNA amplification and detection, which enable the analysis of complex biological samples in its proprietary test cartridges.

易用的系统整合了一系列复杂和耗时的步骤，包括样品制备、DNA扩增及检测，这样就可以在公司专有的监测盒中分析复杂的生物样品。

First there is preparation, where much of the work is done. Then there is cerebration or rumination , where you turn the matter over to your subconscious mind. Then there is realization, where the idea or ideas come to you. Finally, there is application, where you work out the creative idea and turn it into something worthwhile.

首先是预备进程，在此过程中已经做了大批工作；然后是大脑运动或寻思过程，此时你把事物转化为潜意识思维；然后是实现过程，在此过程中你想出了一个或若干个主意；最后是利用进程，此时你把创造性的想法体系成形，并转化为有适用价值的东西。

Chinese pharmaceutical compositions for treating epidemic cerebrospinal meningitis and processes for preparation thereof.

本发明涉及中药领域，流行性脑脊髓膜炎是由膜炎双球菌引起的脑脊髓膜炎的急性传染病。

Preparation of ceria with large particle size and high appearance density.

大粒度，高表观比重氧化铈的合成。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。