碳酸

The present situation and development trend of the study on H2S/CO2 corrosion at home and abroad are analyzed, and the protection measures to the H2S/CO2 corrosion of oil-well tubular goods are presented.

目前对单含H2S或CO2(或含极少量H2S)时的腐蚀机理和规律研究较多，而对类似四川罗家寨气田同时高含H2S和CO2两种腐蚀性气体的腐蚀和防护方法的研究较少。1CO2腐蚀研究现状CO2腐蚀是由于CO2气体溶于水生成碳酸而引起电化学反应导致石油管材发生腐蚀。

Our products are widely used in chemical, paint, coating, ink, resin, tobacco dust, power plant, steel plant, coke-oven plant, waste incinerator, carbonate lye plant, coal mine and pharmacy industries.

本厂产品被广泛应用于化工﹑油漆﹑涂料﹑油墨﹑树脂﹑烟草粉尘业、电厂﹑钢铁厂﹑焦化厂﹑垃圾焚烧炉﹑碳酸碱厂﹑煤矿﹑制药厂等行业。

Our products are widely used in the chemical,paint,coating,ink,resin,tobacco dust,power plant,steel plant,coke-oven plant,waste incinerator,carbonate lye plant,coal mine and pharmacy industries.

本厂产品被广泛应用于化工﹑油漆﹑涂料﹑油墨﹑树脂﹑烟草粉尘业，电厂﹑钢铁厂﹑焦化厂﹑垃圾焚烧炉﹑碳酸碱厂﹑煤矿﹑制药厂等行业。

After a while, the air is then passed into hydrogen carbonate indicator to test for carbon dioxide.

过了一段时间，让空气继而通往碳酸氢盐指示剂以检验二氧化碳含量。

Instant tea effervescent tablet , a kind of solid drink prepared by granulating, drying, and tablet processing using instant tea, citric acid and NaHCO3 as main the raw materials was described in this paper.

速溶茶泡腾片是以速溶茶粉、柠檬酸和碳酸氢钠为主要原料，经过造粒、干燥、压片制成。

And then experiments were carried out to measure the surface tensions, and contact angles of solutions on NiCO3 surface.

实验测量了各溶液的表面张力和溶液在碳酸镍表面的润湿角。

Nanhauang-His stream and The Beihaung-His are located in the volcano function area, the stream has introduction of the sulphur gas and hot spring water of volcano, changes the environmental condition of the water body, influences the heavy metal and moves the course.There is a hot spring in area on the volcano after one The Shuang-His streams belongs to too, but the carbonic acid spring, there is less content of sulphate.Therefore, we can realize it was pH value that influenced the dissolving heavy metal to move mainly.

南磺溪与北磺溪的地区属后火山区域有喷气孔、硫气孔和温泉的存在，溪水有火山硫磺气体与温泉水的输入，改变水体的环境条件，影响到重金属迁移过程，双溪也属后火山区域有一处温泉，但属於碳酸泉，硫酸盐含量较少，由此我们可知，主要影响溶解性重金属迁移的是pH值。

The physical,chemical character and usage of magnesium sulphate were introduced in this paper,the production method and process of magnesium sulphate were also expounded.

介绍了硫酸镁的物理、化学性质和用途，阐述了硫酸镁的生产方法及工艺流程：硫酸法，盐湖苦卤法，苦卤复晒法，高温盐溶浸法，震荡转化法，碳酸化法，二氧化硫催化法。

Mr. Wainwright was still nursing his burned hand, so she wrapped her apron round her own hand andused the stove lifter and scattered the powder on the flames.

那里唏嘘、摆弄他烫着的手，温赖特太太用围裙包住手，爬到高处，把碳酸氢钠粉洒盖在火焰上。

According to the experiment results, the solid-liquid interface tension between NiCO3 and sodium sulphate solution is larger than that between NiCO3 and sodium chloride solution.

结果表明，碳酸镍在硫酸钠溶液体系中的固–液界面张力较大，微小晶粒在硫酸钠溶液体系中的溶解度也较大。

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。