Mineral trioxide aggregate ( mta ) is a new pulp capping material , which allows dental pulp to recover and promotes dentin bridge to form more effectively than some other pulp capping materials , for example , calcium hydroxide or formocresol , et al 摘要三氧化物多聚体是一种新的盖髓材料，可以用于直接盖髓或活髓切断术，牙髓组织对其反应良好，尤其是修复性牙本质的形成状况优于氢氧化钙、甲醛甲酚等盖髓材料。
Abstract : the effects of calcium hydroxide purity , sodium hydroxide concentration , and chlorination temperature on effective chlorine content of calcium hypochlorite have been tested . the results indicate that the higher calcium hydroxide purity is , the higher effective chlorine content of calcium hypochlorite is , that when sodium hydroxide concentration is 30 % , and chlorination temperature is 20 , the effective chlorine content of calcium hypochlorite is the highest 文摘:测试了氢氧化钙纯度、烧碱浓度和氯化温度对漂粉精有效氯含量的影响.结果表明，氢氧化钙的纯度越高，漂粉精的有效氯含量越高；烧碱浓度为30 、氯化温度为20时，漂粉精的有效氯含量最高
The effects of calcium hydroxide purity , sodium hydroxide concentration , and chlorination temperature on effective chlorine content of calcium hypochlorite have been tested . the results indicate that the higher calcium hydroxide purity is , the higher effective chlorine content of calcium hypochlorite is , that when sodium hydroxide concentration is 30 % , and chlorination temperature is 20 , the effective chlorine content of calcium hypochlorite is the highest 测试了氢氧化钙纯度、烧碱浓度和氯化温度对漂粉精有效氯含量的影响.结果表明，氢氧化钙的纯度越高，漂粉精的有效氯含量越高；烧碱浓度为30 、氯化温度为20时，漂粉精的有效氯含量最高
The low solubility of calcium zincate produced from the chemical reaction of zinc oxide and calcium hydroxide in alkaline solution can improve the cycling life the zinc electrode , and the discharge capacity will tend to be stable . furthermore , the effects of la2o3 additives on the electrochemical performances of zinc electrodes were investigated . the results shows that the addition of la2o3 , in zinc electrode can improve the area of reduction peak and the hydrogen evolution potential which means the cathodic hydrogen evolution reaction can be hindered 氧化锌与氢氧化钙在碱性溶液中化学反应生成的难溶于碱的锌酸钙可以使锌电极的循环寿命得到提高，放电容量也趋于平稳，此外还考察了氧化镧对锌酸钙电极电化学性能的影响，结果表明：添加适量氧化镧能明显改善锌电极的电化学性能，使锌电极的还原峰电位正移，电极反应可逆性得到改善，同时也可抑制锌电极析氢反应的发生，提高了锌电极的阳极电流，对阳极反应有一定的活化作用；同时还可以改善锌电极的放电特性，增加电极的放电容量。
