真空的

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。

This shows vacuum conditions affect only chemical indicators of change, it does not change the physical indicators.

这说明抽真空等条件只影响化学指标的改变，却不改变物理指标。

Diaphragm, Stop Seat and Vacuum Breaker to be molded from PERMEX Rubber Compound for Chloramine Resistance

采用PERMEX橡胶化合技术将隔膜片，止回阀阀座和真空断路阀模压在一个整体内，有利于防止氯胺的腐蚀

In this study the change of brightness, chromatism and infra red spectra of compressed China fir during heat treatment in air or heat treatment in vacuum are studied.

该文重点研究了杉木压缩木材在经过空气介质中热处理和真空中热处理后明度、色差和红外光谱的变化。

ABSTRACT : A new kind of vacuum generator circuit breaker is introduced.

提出了1种采用新型并联断口的真空发电机断路器。

The annual sales revenue of vacuum interrupter and vacuum switchgear can respectively come up to 170,000 pieces and 5.000 sets, of which vacuum interrupter and vacuum circuit breaker rank the first in Chinese Market.

产品市场占有率达30%左右，产销率和技术质量水平居国内领先地位，是真空开关行业的排头兵。

The mass loss and linear expansion coefficient of the specimens were measured after vacuum thermo-cycling of different cycles.

分别测试了经不同次数真空热循环后材料的质损率及线膨胀系数。

Plastic packing products such as composite vacuum bags, high temperature cooking bags, freezer bag, nozzle stand bags, zipper bags, aluminum foil bag, Coffee bags, food packaging bags, pet food packaging bags, etc; Non-woven packaging products such as non-woven shopping bag, non-woven hanging bag; carton packaging.

我们的主要产品：复合真空袋、高温蒸煮袋、冷冻袋、吸嘴自立袋、拉链袋、铝箔袋、咖啡袋，食品包装袋，宠物食品包装袋等塑料包装制品；无纺布购物袋、无纺布挂衣袋等无纺布包装制品；纸袋、纸箱等。

Tube conductance is decided by gas region and the shape of the tubes.

在真空系统设计中，流导的计算一般采用手工计算。

Provide a clean vacuum and won't contaminate your system.

提供了一个洁净的真空环境，不会对系统产生污染。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。