impurity content的用法和樣例：
例句
- Magnesium-hydroxide powder features high purity, well distributed particle size, extremely low in impurity.
氫氧化鎂純度高，顆粒均勻，重金屬等雜質(zhì)含量低，可在多個(gè)領(lǐng)域廣泛應用。 - 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.
由于峰面積歸一化法測定誤差大，因此，本法通常只能用于粗略考察供試品中的雜質(zhì)含量。
