查询词典 sodium carbonate

Based on the precipitation reaction principle of defluorination in wet-process phosphoric acid production,sodium carbonate and diatomite have been experimented to defluorine from phosphoric acid with different conditions.

基于湿法磷酸沉淀法脱氟工艺的反应原理，以碳酸钠为脱氟剂，硅藻土为助脱氟剂，研究了不同的碳酸钠和硅藻土用量、作用时间、作用温度条件下的脱氟效果。

After the studies of basic material, citric acid/sodium carbonate, OBSH and Azodicarbonamide were used as foam agents of starch, fiber reinforced starch and starch/PVA blends. The expansion ratio and foam frame of the foams was studied.

在基础材料研究基础上，采用柠檬酸／碳酸钠、OBSH和AC发泡剂对淀粉、纤维增强淀粉和淀粉／PVA共混体系进行了挤出发泡研究，并就体系的发泡倍率和泡孔结构进行了研究。

The optimal conditions determineded by experiments were as follow: chloracetic acid : sodium carbonate : isopropyl xanthate : ethylamine=l : 0.58 : 1 : 1.05, water usage is 30 ml/O.lmol chloracetic acid, esterification temperature was 80癈, esterification time was 2h, ammonolysis temperature was 70 C, ammonolysis time was Ih.

实验得出最佳工艺条件为：一氯乙酸：碳酸钠：异丙基黄药：乙胺=1：0.58：1：1.05，水用量为30 ml／0.1mol一氯乙酸，酯化温度80℃，酯化时间2小时，氨解温度70℃，氨解时间1小时。

The subject has completed existing tail gas purification and recovery system from four aspects:(1) carbonation tail gas purification;(2) ammonia cleaning of soda ash filtering machine filtered tail gas;(3) NH3 and CO2 recovery and utilization of sodium carbonate producing tank;(4) distillation and recovery of furnace gas condensate.

本课题从四个方面完善现有纯碱尾气净化与回收系统：(1)碳化尾气净化；(2)滤碱机过滤尾气净氨；(3)出碱槽NH_3、CO_2的回收与利用；(4)炉气冷凝液的蒸馏与回收。

Buluofen is powder of white crystallization sex, in the Yi Rong in alcohol, acetone, 3 chloric firedamp or ether, in water scarcely dissolve, in hydrogen oxidation natrium or sodium carbonate try the Yi Rong in fluid.

布洛芬是白色结晶性粉末，在乙醇、丙酮、三氯甲烷或乙醚中易溶，在水中几乎不溶，在氢氧化钠或碳酸钠试液中易溶。

The effect of mixed culture solid fermentation of Candida tropicalis ZD-3 and Aspergillus niger ZD-8 on detoxification of cottonseed cake,as well as the effect of sodium carbonate and minerals on the reduction of free gossypol and crude protein contents were investigated during the mixed culture fermentation of CSC by detection of protein disappearance rate in vitro.

通过测定发酵底物中游离棉酚、粗蛋白质含量，体外法测定饲料蛋白质消失率等方法研究热带假丝酵母ZD-3(Candida tropicalisZD-3)与黑曲霉ZD-8(Aspergillus nigerZD-8)复合固体发酵对棉籽饼粕脱毒效果的影响；碳酸钠以及矿物质处理对棉籽饼复合发酵脱毒效果的影响。

The liberated freebase methamphetamine which seperates is solvent extrated with two, 75-100 ml ether portions and the ether/amine solution is first washed with 50 mls of distilled water and the ether/amine solution dried with anhydrous sodium carbonate.

The yield is 80 - 88%解放freebase分隔甲基安非溶剂extrated是两个， 75-100毫升醚部分和乙醚/胺的解决办法是第一次洗了50英里的蒸馏水和乙醚/胺溶液干燥无水碳酸钠。

A method for the mercury thiocyanate spectrophotometric determination of chlorine in ore samples was reported in this paper. The sample was sintered with zinc oxide-sodium carbonate and then leached with water.

中文摘要：岩石样品经氧化锌-碳酸钠烧结预处理，用水浸取后澄清，取清液用硫氰酸汞间接分光光度法进行氯的测定。

By using phenolphthalein and methyl orange as indicators, free alkali, zinc and sodium carbonate were titrated with hydrochloric acid and zinc was titrated with EDTA.

提出了EDTA络合滴定和酸碱滴定联合测定碱法炼锌中含锌碱性溶液中游离碱、锌和碳酸钠的新方法。

The high-pure nanometer-sized zinc oxide was prepared by taking sodium carbonate and zinc chlorate as raw materials and using a precipitation-thermal decomposition method.

以碳酸钠和氯化锌为原料，采用沉淀-热分解二步法制备了高纯纳米氧化锌粉体。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。