碳酸钠

Using hydrofluoric acid and sodium carbonate as sediments, removal of metal impurities from WPA was studied.

采用氢氟酸和碳酸钠作为沉淀剂，对湿法磷酸进行了脱除金属杂质的试验研究。

Said method includes the following steps: firstly, adopting dipotassium hydrogen phosphate, magnesium sulfate, calcium chloride, citric acid, ammonium ferric citrate, disodium EDTA, sodium carbonate and minor element solution A5 to prepare culture liquor of nostoc according to a certain ratio; then controlling temp. light intensity and deration condition of the culture liquor to make culture of nostoc; third ste, harvesting nostoc; fourth ste, extracting nostoc polysaccharide; and fifth step, purifying, harvesing and drying nostoc polysaccharide.

首先是配制葛仙米培养液：采用磷酸氢二钾、硫酸镁、氯化钙、柠檬酸、柠檬酸铁铵、乙二胺四乙酸二钠盐、碳酸钠，微量元素溶液A5按比例配制；其次是葛仙米的培养：控制温度、光强、光质、培养液通气条件；第三是葛仙米的收获；第四是葛仙米多糖的提取；第五是葛仙米多糖的纯化、收获与干燥。

An airplane casts a shadow over Lake Natron in Tanzania. The lake's color comes from a red pigment in cyanobacteria, which feed on high levels of salt in the lake.

意译：一架飞机投射其影像在坦桑尼亚的天然碳酸钠湖面上，这个湖面的颜色来自蓝绿色细菌所产生的红色素，湖内的含盐量是高水平的。

An airplane casts a shadow over Lake Natron in Tanzania. The lake'scolor comes from a red pigment in cyanobacteria, which feed on highlevels of salt in the lake.

意译：一架飞机投射其影像在坦桑尼亚的天然碳酸钠湖面上，这个湖面的颜色来自蓝绿色细菌所产生的红色素，湖内的含盐量是高水平的。

Neutral fat or paraffin— Add 1 g of Stearic Acid to 30 mL of anhydrous sodium carbonate solution (1 in 60) in a flask, and boil the mixture: the resulting solution, while hot, shows not more than a faint opalescence.

中性脂肪或蜡：取硬脂酸1g，加入已装有30mL无水碳酸钠溶液(1：60)的烧瓶中，加热煮沸，产生的溶液在加热时不显示浑浊。

Geochemical analyses include 'total'(concentrated HNO3 -HCl digestion) and chemical forms (three step sequential digestion, reducible, oxidizable and residual forms) of heavy metals Cu, Zn, Pb, Cr,Fe and Mn, iron oxides dithionite-citrate-bicarbonate (DCB and ammonium in the dark extraction as the estimation of total and amorphous iron oxides, respectively, total sulfur and organic matter.

化学分析包括重金属（Cu、Zn、Pb、Cr和Fe、Mn）"总量"（浓HNO3、HCl提取，非严格的总量）、形态（三步提取法，可还原态、可氧化态和残渣态）、氧化铁（连二亚硫酸钠－柠檬酸钠－重碳酸钠提取和草酸铵提取分别估计总氧化铁和无定形氧化铁）、总硫和有机质，并比较了DCB提取前后样品磁性特征的变化。

The experimental process on synthesis of roxithromycin was studied by using erythromycin oxime and MEMC as raw material under the catalytic action of anhydrous sodium carbonate.

研究了以无水碳酸钠为催化剂，红霉素肟与甲氧基乙氧基氯甲醚为原料，一步合成罗红霉素的实验过程。

Major procurement of goods: a three-chlorosilanes, dichloromethane, AE activity ester, 3-iodine Silane, special acid, pentyl chloride, triethylamine, thiadiazole, tetrazolylazo acid, 2 - Acetamide, tetrahydrofuran, the four-guanidine, isopropanol, five phosphorus trichloride, sodium vary bitter, acid, sodium phenylacetate, 6-2 silicon n-amine, Ethylacetoacetate , Methyl isobutyl ketone, potassium dihydrogen phosphate, aluminium oxide, DL methionine, N, N-dimethylaniline, NN-diethyl aniline, 4 sodium EDTA, Anhydrous sodium sulfate, ammonium sulfate, potassium sulfate, sodium acetate, sodium carbonate, DMC, formic acid, sodium chloride medicinal, oxalate, protopine, acetone, alcohol, acetic acid, vinegar Ethyl, butyl acetate, methanol, ethanol (anhydrous, industrial, medicinal), formaldehyde, Ye Jian (30%), hydrochloride (industrial-grade, refined grade, reagent level), sulfate (98%), Ammonia, calcium carbonate, chlorine dioxide, 6 - APA ,7-ACA ,7-ADCA ,7-ANCA, sulbactam, ceftazidime activity ester, Deng salt (hydroxymethyl-K, acid precursors Potassium, sodium dihydrogen methyl), resin, the enzyme, water treatment agent, Xiao Mo agent, demulsifier, flocculants, activated carbon, all kinds of medicinal materials, All kinds of additives

三甲基一氯硅烷、二氯甲烷、AE活性酯、三甲基碘硅烷、特戊酸、特戊酰氯、三乙胺、噻二唑、四氮唑乙酸、二甲基乙酰胺、四氢呋喃、四甲基胍、异丙醇、五氯化磷、异辛酸钠、苯乙酸、苯乙酸钠、六甲基二硅胺烷、乙酰乙酸乙酯、甲基异丁酮、磷酸二氢钾、三氧化二铝、DL蛋氨酸、N，N-二甲基苯胺、NN-二乙基苯胺、乙二胺四乙酸四钠、无水硫酸钠、硫酸铵、硫酸钾、醋酸钠、碳酸钠、碳酸二甲酯、甲酸、药用氯化钠、草酸、片碱、丙酮、正丁醇、冰醋酸、醋酸乙酯、醋酸丁酯、甲醇、乙醇、甲醛、液碱（30％）、盐酸（工业级、精制级、试剂级）、硫酸（98％）、氨水、碳酸钙、二氧化氯、6－APA、7－ACA、7－ADCA 、7－ANCA、舒巴坦、头孢他啶活性酯、邓盐(羟甲基钾、前体酸钾、二氢甲基钠)、树脂、生物酶、水处理剂、消沫剂、破乳剂、絮凝剂、活性碳、各种药用辅料、各种添加剂

The bleaching performance of the in-situ produced peroxide with sodium perborate and sodium percarbonate on deinked pulp was compared with that of general peroxide in this paper.

介绍了采用过硼酸钠和过碳酸钠就地产生H2O2与通常的采用H2O2水溶液进行脱墨浆漂白效果的比较与评价。

By the state-level key high-tech enterprises - Jinke Technology Group Holdings initiated the establishment of the Company, Ltd., founded in May 2001, is located in China's economy the most dynamic Yangtze River Delta, Hangzhou Bay the south bank of Hangzhou Bay Fine Chemical Park, adjacent to Shanghai Port and Ningbo Port, is the factory covers an area of 880 acres, with more than 600 employees, specializing in the production of sodium percarbonate, tetraacetylethylenediamine, sodium perborate, solid peracetic acid and sodium acetate.

浙江金科化工股份有限公司系由国家级重点高新技术企业－金科科技集团控股发起设立的股份有限公司，创建于2001年5月，地处中国经济最具活力的长江三角洲地区，杭州湾南岸的杭州湾精细化工园区毗邻上海港与宁波港，现厂区占地880亩，拥有员工600余名，专业生产过碳酸钠、四乙酰乙二胺、过硼酸钠（SPB、固体过氧乙酸及醋酸钠。

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。