查询词典 hydrocarbonate

The new technology for the preparation of cryolite from fluosilicic acid and ammonium hydrocarbonate is introduced.

介绍了氟硅酸、碳酸氢铵制备冰晶石的新工艺。

Fluosilicic acid,which is the byproduct from phosphate fertilizer factory,reacts with ammonium hydrocarbonate to obtain ammonium fluosilicate,then reacts with ammonium carbonate to form settled SiO 2,after filtration,water washing,drying and calcining,high purity SiO 2 with less than 10×10 -6 metal impurity and less than 10×10 -9 uranium and thorium respectively is made.

由磷肥厂副产氟硅酸同碳铵反应得氟硅酸铵，再和碳铵反应生成SiO2 沉淀，经过滤、水洗、干燥、煅烧得高纯SiO2 ，其金属杂质总含量小于 10× 10 -6，含放射性元素铀和钍各小于 10× 10 -9，通过实验获得了适宜的工艺条件，反应温度 70℃～ 80℃，反应时间 1 5h～ 2 0h ，配料比n(NH4HCO3 )∶n(NH4 2 SiF6 =4 4。

Wheat ; Vegetative Growth ; Fertility Level ; Hydrocarbonate

小麦；营养生长；肥力水平；光合产物

Specific contents and main conclusions are shown as follows:(1) The influence of precipitant on the properties of YAG:Ce phosphor was investigated. The precursor has good dispersity, when selecting ammonia hydrocarbonate as precipitant.

主要研究内容及结论如下：(1)研究了沉淀剂对前驱体制备的影响，结果表明：碳酸氢铵作沉淀剂制备的前驱体分散性好，煅烧过程中直接转变为YAG相，没有杂相生成。

First,brine is reacted with ammonium hydrocarbonate to obtain the sodium hydrocarbonate and the ammonium chloride solution,and then filtrated.

卤水制备纯碱分两步进行，第一步用卤水、碳酸氢铵反应得到碳酸氢钠微溶析出和氯化铵溶液，过滤。

The effects on yield and canopy biomass accumulation and distribution after anthesis of later sowing wheat were studied in different fertility levels. The results showed that each above ground organs hydrocarbonate accumulation increased with fertility level rising.

对不同肥力水平下晚播小麦开花后地上器官光合产物积累、运转和对产量影响的研究表明，开花后同一天，各地上器官光合产物的积累量均随肥力水平的提高而增加。

The anesthetic mixture consisted of 10ml of ropivacaine 1% and lidocaine hydrocarbonate 2% with epinephrine 1:200,000. The spread of the solution around the subclavian artery could be visualized using our imaging probe.

所有的神经阻断均在超音波探头的影像下操作，使用的局部麻醉剂为10ml之1% ropivacaine与2% lidocaine混合溶液；在超音波的影像下可观察到溶液分布於锁骨下动脉周围。

The results from laboratory research indicated that the max rate of dry leaching is 4%;The rate of wet leaching of vitriol is higher than hydrochloric acid, when the concentration of vitriol is 40%, measuring Ratio of Solid to Liquid of serpentine and vitriol is 4:1.,and joined helper leaching agent: HF (The amount put in is 1.2%-1.5% of the 40% vitriol), the rate of leaching of magnesia could over 98%. After using ammonia to trash extraction, basic magnesium carbonate is acquired by ammonium hydrocarbonate.

经过实验室研究，干法氧化镁的浸出率未超过4％；湿法硫酸的浸出率高于盐酸，在硫酸浓度为40％，硫酸与蛇纹石的液固比为4：1时，加入助浸剂HF(加入量为40％硫酸质量的1.2％-1.5％)后氧化镁的浸出率为98％以上。

A quantitative appraisal of the prospect of uranium mineralization is completed based on a set of hydrochemical data acquired from the known in-situ leachable sandstone-type uranium, including radon content, acid-alkali ratio, oxidized and reduced electronic potential, hydrocarbonate radical and uranium content in water.

但是在找铀过程中仅用水化学成份、氡含量、酸碱度和氧化还原电位等数值进行描述，说明它们与铀矿化的关系，这种单一因素的描述不能综合反映与铀矿化的联系程度，以定量评价铀矿化与上述因素的关系，从而影响了水化学找矿的效果。

Phosphogypsum reacts with ammonium hydrocarbonate at 5-30℃ to obtain ammonium sulfate solution,then the solution reacts with potassium chloride at 30℃ with adding an organic solvent to produce potassium sulfate.

介绍了由磷石膏制硫酸钾的新工艺：磷石膏与碳酸氢铵在 5 - 30℃下反应，得硫酸铵溶液，该溶液与氯化钾在 30℃左右反应，并添加一种有机溶剂，得硫酸钾。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。