含碳酸钙的

Calcium carbonate mostly occurs in two forms: metastable aragonite and stable calcite.

贝类的壳含两种碳酸钙结晶，一是亚稳态的霰石结晶，另一是稳定的方解石结晶。

The experimental results show that when the ratio of seven water ferrous sulfate amount: Calcium carbonate powder amount: Ferri waste residue amount =1.6∶1∶1, desulphurization effect of the obtained product is the best. Each gram of this kind of desulfurizer can completely absorb the sulfur element, which is included by 0.064 9 g five water sodium sulfide.

实验结果表明：当七水硫酸亚铁∶碳酸钙粉末∶含铁废渣=1.6∶1∶1时，制备的脱硫剂脱硫效果最好；每克脱硫剂可全部吸收0.0649g五水硫化钠中的硫元素。

Said mineralizing agent is the fluoric alkali-earth metal salts or alkali metal salts (potassium fluoride or calcium fluoride).

其特征是在磷酸钙盐与碳酸钙盐以2∶1比混合物中，加入0.5～3wt％的含氟离子碱土金属或碱金属盐矿化剂，例如氟化钾、氟化钙等。

Their tribological properties were tested in four-ball tribotester. The surface morphology of wear scar were examined by scanning electron microscope.

利用四球摩擦磨损试验机考察含纳米碳酸钙、纳米铜粒子添加剂的润滑油的摩擦学性能；用扫描电子显微镜观察表面磨痕的形貌。

The reservoirs in Mawangmiao oilfield is strongly sensitive and acid sensitive because of its ferreous minerals, such as pyrite and illite/smectite mixed- layers.

马王庙油田储层普遍含有伊／蒙混层及黄铁矿等含铁矿物，存在较强的水敏和酸敏；长期以来注入水水质不达标，已经导致地层的固体堵塞和油堵；经过垢样分析，结垢主要为碳酸钙、少量铁垢及碳酸镁垢。

The yield of the magnesium in raw materials is steady between 70-80%, and the magnesian calcium carbonate, the by-product of the experiment, will be widely used too.

原料中镁的提取率稳定在70-80%之间，实验的副产物含镁碳酸钙也实现了综合利用，此方法潜力巨大，发展前景光明。

The results of the physiological and biochemical indexes in callus tissue of Poncirus trifoliata tested under calcium carbonate(CaCO3) stress indicated that except total iron content, the negative correlations among CaCO3 concentration and peroxidase activity, superoxide dismutase activity, catalase activity, active iron content, soluble protein content and callus growth were recorded.

提要测定碳酸钙(CaCO3)胁迫下枳壳愈伤组织的某些生理生化指标的结果表明：除全 Fe 含量外，CaCO3浓度与过氧化物酶活性、超氧化物歧化酶活性、过氧化氢酶活性、活性Fe含量、可溶性蛋白质含量、愈伤组织增重均呈显著或极显著负相关，与培养液pH值呈显著正相关；随着培养的进程， POD活性、活性Fe和可溶性蛋白质含量、愈伤组织增重呈降低趋势， SOD和CAT活性先升后降，含高浓度CaCO3的培养液 pH值仅在20日左右略有降低。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。