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The nanoparticles of magnesium oxide are prepared by homogeneous precipitating method and their activity is measured by the citric acid method.
采用柠檬酸法测定了均匀沉淀法制备出的纳米氧化镁粉体活性，并与普通氧化镁粉体活性进行了比较。
Homogeneous poisonous plants distilled with different solvent had different activity of extract.
同种有毒植物应用不同溶剂提取，获得的提取物活性不同。
The catalyst has excellent crystallinity, homogeneous size distribution, size from nanometers to decades of nanometer and visible light catalysis activity.
该催化剂结晶性好，粒径分布均匀，粒径大小为几个纳米到几十个纳米，具有可见光催化活性。
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