查询词典 raw

The invention provides an anhydrous hydrogen fluoride production process; reaction raw materials fluorite powder and sulfate are mixed by an external mixer and enter into a converter with jacket; hot air with the temperature of 350 DEG C to 600 DEG C is fed in the jacket; the fluorite powder and the sulfate have chemical reaction and produce hydrogen fluoride; the produced hydrogen fluoride enters into a scrubber from a furnace header to be washed; the washed hydrogen fluoride enters into an intermediate tank from a condenser, and then receives distillation and degasification to prepare the finished product anhydrous hydrogen fluoride; solid residue is emitted from a furnace tail.

本发明提供一种无水氟化氢生产工艺，反应原料萤石粉及硫酸经外混器混合后进入带有夹套的转炉，向夹套内通入350～600℃的热风，萤石粉和硫酸在发生化学反应生成氟化氢，生成的氟化氢气体由炉头进入洗涤塔进行洗涤，洗涤后的氟化氢由冷凝器进入中间槽，然后经过精馏、脱气制得成品无水氟化氢；固体残渣由炉尾排出。

SnO2/kaolin composite was prepared from SnCl2 and kaolin as raw materials by alcoholysis and ammonia.

以氯化亚锡和高岭土为原料，通过醇解，氨解反应，制备了纳米SnO2/高岭土复合材料。

Pentanediol dithiophene ester was synthesized by means of alcoholysis reaction using 2,4-Pentanediol and Aroly chloride as raw materials, and 1H NMR spectrum was characterized and it can not be explained.

以2，4-戊二醇和芳酰氯为原料，通过醇解反应合成了一种新的内给电子体化合物二(2-噻吩甲酸)-2，4-戊二醇酯，表征其1H-NMR谱，发现化学位移在2附近出现了三组亚甲基峰，无法解释。

Because of its production of raw materials is not all fine flour, but a mixture of wheat flour has been milled down the process of the cortex, germ, aleurone layer and a small amount ...

由于其制作的原料并不全是精面粉，而是混合了小麦在磨粉过程中被碾下来的皮层、胚芽、糊粉层及少量。。。

Surrounded by snow and ice, an Aleut hunter slices slabs of raw whale blubber for dinner.

在冰天雪地的极地，爱斯基摩人的晚餐是切成厚片的鲸的生肉。

For comparison,SnO_2 nanoparticles(with average particle size of 200nm) were divided into two aliquots: one aliquot was used as the material for the fabrication of thick-film gas sensors(denoted as "raw sensors").

作为气敏材料，在可燃气体检测和有毒气体探测器的研制中，SnO2是研究最多、使用最广的一种材料[1，2]。

First of all,the content of alkali of raw materials of concrete must be high.

并对混凝土工程发生碱-集料反应的内在本质和作用机理进行了分析。

The raw materials used by the method are green chemicals dimethyl carbonate and p-nitrophenol, and the catalyst is NaY molecular sieve, activated aluminum oxide or activated carbon which is impregnated by alkali metals or alkaline-earth metal compounds.

本发明涉及到一种合成对硝基苯甲醚的方法，该方法所用的原料为绿色化学品碳酸二甲酯和对硝基苯酚，催化剂是经碱金属或碱土金属化合物浸渍过的NaY分子筛、活性氧化铝或活性碳。

However, it must be remembered that spinach is alkaline only when consumed raw.

不过，需要注意的是菠菜仅在生吃的时候才是碱性的。

Alkane used primarily as fuel, solvents and organic synthetic raw materials.

烷烃主要用作燃料、溶剂和有机合成的原料。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。