碳酸

The present invention relates to one kind of polypropylene carbonate alloy and its preparation process.

本发明涉及一种聚丙撑碳酸酯合金及其制备方法。

It is reported that the main components are carbonate rocks, the nature owns the superlative craftsmanship!

据说它的主要成分是碳酸岩，大自然真是鬼斧神工啊！

Surface are mainly carbonate rocks, within the distribution area in Yunnan, accounting for 50% of the total land area, Guizhou, even accounting for about 80%.

地表主要分布碳酸盐类岩层，在云南境内分布面积占总土地面积的50％，贵州境内更占到80％左右。

The uranium is then dissolved from the beads using a solution of ammonium carbonate and precipitated as "yellow cake", a mixture of uranium oxides.

接下来，小珠子里头的铀离子会被碳酸铵溶液溶解，其后沉淀，析出&黄饼&，即各种铀氧化物的混合物。

Aluminium hydroxide, the precursor of alumina, was synthesized by precipitation reaction of the aluminium nitrate and sal volatile.

利用硝酸铝溶液和碳酸按溶液的沉淀反应制备一种氧化铝的前驱体－氢氧化铝。

It was that using the refined alkaline barium chloride solution which was produced by the circular ammonium chloride solution leaching low-grade barium mineral as interim material,and adopting EDTA and the condensate sal volatile by using the liquid co-precipitation method to prepare the high purity spherical barium crbonate.

以氯化铵循环液浸取低品位钡矿制备的碱性氯化钡溶液为中间原料，添加EDTA与冷凝碳酸铵的溶液，通过液相共沉淀法制得高纯球状碳酸钡。

Sodium bicarbonate is an antacid which neutralises hydrochloric acid produced in the stomach.

碳酸氢钠是一种抗酸剂可以中和由胃产生的HCL。

Bisphenol A is a chemical widely used to make hard, polycarbonate plastic.

双酚A是一种广泛应用于制造耐用的聚碳酸酩塑料。

Lithium carbonate : this is an older mood stabilising drug that is still widely used.

碳酸锂 ：这是一个老年人的情绪稳定药物，仍然是广泛使用。

Aimed at substrate S1 and S2, the reation condition is : MeOH: H_2O = 9:1 as solvent, 1 equiv. K_2CO_3 as base.

针对S1、S2两种底物，以甲醇：水=9：1做溶剂，1当量的碳酸钾做碱为反应条件。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。