单词：impurity content
impurity content的用法和样例：
例句
- Magnesium-hydroxide powder features high purity, well distributed particle size, extremely low in impurity.氢氧化镁纯度高，颗粒均匀，重金属等杂质含量低，可在多个领域广泛应用。
- This method can only be applied to roughly test impurity content of test samples due to relatively big deviation produced by peak area normalization method.由于峰面积归一化法测定误差大，因此，本法通常只能用于粗略考察供试品中的杂质含量。
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