At present mainly uses the union system alkaline process production calcium carbonate soda ash.

It can prevent scale formation, calcium carbonate in particular, in water system.

可阻止水中成垢盐类形成水垢, 特别是碳酸钙垢的形成.

Moreover, the composition of the ash contents was found to be mainly calcium carbonate.

进一步的分析表明, 灰分的主要成分为碳酸钙.

A new solid base catalyst of calcium methoxide calcium carbonate as the starting material.

以碳酸钙为基础材料,制成高效酯交换催化剂甲醇钙.

The characterization of modified calcium carbonate by oil absorption ratio was introduced.

介绍了吸油率法直接表征碳酸钙改性效果的方法.

Limestone is rock composed of calcium carbonate.

石灰石是由碳酸钙所构成的岩石.

It'should not be combined with acidic medicine , e . g . vitamin C, calcium chloride , penicillin, etc.

忌于酸性药物如维生素C 、 氯化钙 、 青?素等配伍使用.

By which of the fellowing methods may metallic calcium be obtained from molten calcium chloride?

用下列哪一种方法,可以从融化的氯化钙中制取钙单质?

Scope Calcium chloride manufacturing Calcium chloride manufacturing.

经营范围:氯化钙制造.

The groundwater of Xujiahe formation is mainly the calcium chloride type of gas field water.

须家河组地层水主要为氯化钙型的气田地层水.

Rennet calcium chloride and curing and the main factors were explored for the activity of rennet.

氯化钙的添加量和成熟条件等主要工艺参数,并探讨了影响凝乳酶活力的主要因素.

Nanometer calcium carbonate was prepared taking calcium chloride, ammonia and carbon dioxide as material by carbonization.

利用氯化钙 、 氨水和二氧化碳为原料,采用碳化法制备纳米碳酸钙.

Calcium chloride is often used in warm or tropical areas.

氯化钙是用来在温暖地区和热带地区的.

Industrial calcium chloride aqueous solution used as anti-icing fluid has some corrosive action to common metals.

工业氯化钙水溶液作为防冻液有一定的腐蚀性.

The salt effect of methyl acetate-methanol-water system by adding calcium chloride was studied at 20℃.

在20℃条件下研究了加入氯化钙对醋酸甲酯 - 甲醇 - 水体系产生的盐效应.

Anhydrous calcium chloride is used as the catalyst for preparing n-Butyl lactate formnte.

无水氯化钙为催化剂,乳酸、正丁醇直接酯化合成乳酸正丁酯.

Production: calcium chloride, magnesium chloride. Sales: chemical products ( excluding dangerous goods ).

生产: 氯化钙 、 氯化镁. 销售: 化工产品 ( 不含危险品 ).

Using 1 % calcium oxide has more single caffeine production rate, extraction rate and purity.

1%氧化钙水溶液单纯提取咖啡因的得率 、 提取率和纯度较高.

This paper discussed the preparation of calcium peroxide from calcium oxide and peroxide at normal temperature.

以生石灰和双氧水为原料,通过添加稳定剂,实现了过氧化钙的常规合成.

The Calcium Oxide is used to mix oxygen with the steel.

这些生石灰是用来将氧混合在熔化的钢水中.

A rare plagioclase feldspar with high calcium oxide content occurring in igneous rocks.

一种白色的晶状氧化物,用于制造氢化钙.