英语释义

• a white salt (K2CO3) that is basic in solution; used to make glass and cleansing agents

片语

potassium soldium carbonate碳酸钠钾

potassium hydrogen carbonate碳酸氢钾

potassium americyl carbonate碳酸镅酰钾

potassium sodium carbonate碳酸钠钾

potassium acid carbonate a crystalline salt (KHCO3) that is used in baking powder and as an antacid

同义词： potassium bicarbonate potassium hydrogen carbonate

potassium m carbonate fertilizer碳酸钾肥

Potassium sodium carbonate anhydrous无水碳酸钾钠

potassium copper carbonate碳酸铜化钾

potash(Potash) （美、俄、加）波塔什（人名）

potassium lanthanum carbonate碳酸镧钾

英汉例句

• the alkylation of diethyl malonate and ethyl cyanoacetate using powdered potassium carbonate asa base in the absence of solvent and other catalyst is studied.

  本文报道在碳酸钾存在下，丙二酸二乙酯、氰乙酸乙酯的固液相烃基化反应。

• this product are security products, non toxic, non flammable and explosive materials. the components are potassium carbonate and sodium carbonate.

  本品为安全品，无毒害，非易燃易爆品。成分为碳酸钾和碳酸钠。

• some suggestions for the development of potassium carbonate industry in china are given.

  针对我国碳酸钾工业存在的问题提出今后发展建议。

• the present situation of potassium carbonate industry, including the capacity of production, supply and demand in domestic and abroad along with new industrial processes were introduced.

  介绍碳酸钾工业的国内外产需概况，国内现行生产工艺及其特点，新工艺开发进展。

• using cesium carbonate as catalyxer and potassium carbonate as base, reacting directly phenol with alkyl halides in refluxing acetonitrile will give alkyl aryl ethers in good yields.

  以碳酸铯作催化剂，碳酸钾作堿，以乙腈作溶剂，在回流的条件下酚与卤代烃反应高产率得到烷基芳醚。

• the original ammonia removal process by evaporation was replaced by air stripping at vacuum in the production of potassium carbonate with ion-exchange method.

  在离子交换法生产碳酸钾的基础上，将原有蒸发除氨工艺改为真空加热吹脱除氨工艺。

• i would like to enquire about your potassium carbonate if possible.

  我们想询问一下关于贵公司销售的碳酸钾产品。

• virtually in small scale reaction which act was efficacious, so no being on to potassium carbonate could bring some trouble to this reaction.

  因此一直没有意识到碳酸钾可能带来些麻烦当反应放大到一定规模。

• n-methyl-2-(4-phenoxyphenoxy) acetamide was synthesized from 4-phenoxyphenol and 2-chloroacetyl methylamine with dmf as solvent and potassium carbonate as catalyst.

  在无水碳酸钾存在下，n，n-二甲基甲酰胺为溶剂，由2-氯乙酰甲胺和4-苯氧基苯酚反应，制备了n-甲基-2-（4-苯氧基苯氧基）乙酰胺。

• a series of 3-arylpropenoic acids were prepared by using the perkin reaction from aromatic aldehyde with potassium carbonate as catalyst.

  研究了以无水碳酸钾作催化剂，芳香醛与酸酐反应合成3芳基丙烯酸，用对甲苯磺酸催化酯化反应合成3芳基丙烯酸酯。

• by spraying and coating the potassium carbonate solution onto the surface of glass spheres , the layering growth mechanism of granulating process was studied in fluidized bed.

  通过在流化床中将碳酸钾溶液雾化后喷涂在处于流化状态的玻璃珠上，研究了流化床造粒过程的层式生长机理。

• methods chalcone derivatives were synthesized from benzaldehyde derivatives and acetophenone by using weak alkali potassium carbonate as based catalyst in water via phase - transfer catalysis.

  方法以苯甲醛衍生物和苯乙酮为原料，弱堿碳酸钾为催化剂，水为溶剂，用相转移催化法合成查耳酮衍生物。

• some proposals about prepassivation of mild steel equipments in hot potassium carbonate co_2-stripping systems are suggested.

  从理论上对热钾堿脱碳系统碳钢设备的预钝化工艺提出了建议。

• the phase transfer catalyzed wittig reaction of allyl diphenyl phosphonium salt with substituted aromatic aldehydes using potassium carbonate as base provides 1, 3-dienes with good e-selectivity.

  本文报道了二苯基烯丙基型鏻盐与取代芳醛在碳酸钾作用下的固一液相转移催化反应。

• the output of potassium carbonate and xylitol takes the first place in china.

  碳酸钾、木糖醇产品产量居全国首位；

• maybe when the reaction scale comes to an extent, the harsh potassium carbonate will not be suspended well in the solvent system (acetontirle) where almost no potassium carbonate was dissolved.

  可能是粗糙的颗粒碳酸钾不能很好的悬浊在乙腈里，碳酸钾在乙腈中叶几乎是不容的。

• the paper introduced recent development of potassium carbonate industry, including production, capacity, demand and production pro cess at home and abroad.

  介绍了国内外碳酸钾产需增长概况、国内现行生产工艺及其特点、新工艺开发现状。

• a new technology to recover potassium carbonate from the wastes of triazolone andmultipie-effect azole production by exchange method is introduced.

  介绍了用离子交换法从生产农药三唑酮、多效唑的废渣中回收碳酸钾的新工艺。

• potassium carbonate is used instead of potassium acetate as basic catalyst because its basicity is greater than potassium acetate, it can speed up the reaction.

  以碳酸钾代替醋酸钾为堿性催化剂。由于它的堿性比醋酸强，故能加速反应速度。

• moreover, some suggestions were given for the development of potassium carbonate industry in china.

  通过对我国碳酸钾工业现状进行分析，对其今后发展提出建议。

• the reaction of bis-imidazoline with 1,2-dibromoethane and potassium carbonate in acetonitrile provided monobromide salt with a yield of 78.

  在乙腈溶剂中，碳酸钾存在下，双咪唑啉和1，2-二溴乙烷进行扩环反应，得到环状中间体一溴盐，产率78。

• with green freedom, they would pass the air over a solution of potassium carbonate added to the cooling liquid.

  「绿色自由」设想让空气经过加入了碳酸钾为成分的冷却液。