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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 synthesis method comprises the following steps: adding 2-( 5-(dimethylamino methyl- 2- furyl methyl sulpho ethylamine and 1- methylthio- 1- methylamino- 2- nitro ethylene with a molar ratio of 1.04: 1 into water, heating to 48- 52 Deg. C, reacting 4.5 hours with a vacuum degree of 0.02- 0.05 MPa, cooling, adding sodium-hydroxide of concentration of 10% to regulate the PH value to 11.0- 11.4, filtrating and cooling the filtrate to 0- 2 Deg. C, crystallizing for 12 hours, centrifugally filtrating, and rinsing filter cake with purity water to prepare wet ranitidine alkali; dissolving ranitidine alkali in alcohol and reacting with chlorhydric acid to prepare ranitidine hydrochloride.

合成方法包括：将摩尔比为1.04∶1的2-(5-(二甲氨基甲基-2-呋喃基甲基硫代乙胺与1-甲硫基-1-甲胺基-2-硝基乙烯加入水中，升温至48-52℃，于真空度0.02～0.05MPa反应4.5小时，反应完毕降温，用10％氢氧化钠溶液调pH＝11.0-11.4，抽滤，滤液降温至0～2℃，结晶12小时，离心甩滤，用纯化水漂洗滤饼，得雷尼替丁碱湿品；将雷尼替丁碱溶于乙醇中与盐酸反应，制备得到盐酸雷尼替丁，产品符合欧洲药典标准。

You subject the resulting heart homogenate, which is dense and opaque, to a series of differential centrifugation steps.

你把得到的密集而不透明的牛心匀浆液用一系列的差速离心。

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。

When the villagers were going through their cere monies to drive away pestilential influences, he put on his court robes and stood on the eastern steps.

乡里迎神驱鬼时，穿着朝服站在东面的台阶上。11。问人于他邦，再拜而送之。康子馈药，拜而受之。曰："丘未达，不敢尝。"

Obviously all process steps are highly important in order to get a desired CG picture.

显然所有的过程步骤最重要的是得到一张想要的CG图像。

If you MUST continue a chain letter, still follow steps 1 and 3 above and get yourself a disposable email address for this purpose.

如果你要继续连锁信仍遵循上述步骤1和3并得到了支配自己的电子邮件地址这一目的。

Steps to be arranged in chain locker wash bulkhead.

在锚链舱的制荡舱壁上安装有踏步。

Once followership is built up, the other steps in the alternative rule's chain unfold in a manner that inspires performance and brings about extraordinary results.

一旦追随的信念建立起来，接下来，在这抉择规则中，展现在这个方式上以激励成果，并带来非凡的成就。

However, we do not stop our steps to expand more new items to feed the changeful demands of consume.

但是，我们并不阻止我们的脚步，以拓展更多新的项目，以养活多变的需求消费。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。