The approach developed in this article is practical and can be used to separate acidic and basic proteins simultaneously.
本文建立的方法，可有效地用于同时分析酸性和碱性蛋白质混合物。
The Sinian volcanics are typical bimodal volcanic rocks in Kuruktag area, which are consisted of acidic and basic volcanic rocks but with rare medium acidic one.
库鲁克·塔格震旦纪火山岩构成一个典型的双峰值火山岩系，主要由酸性火山岩与基性火山岩组成，缺少中酸性火山岩。
The R-groups give the amino acids their physical-chemical characteristics such as polarity (hydrophobic or hydrophilic) and charge (acidic or positive versus basic or negative).
R基团赋予氨基酸物理化学特性，例如极性（亲水性和疏水性）以及电荷（酸性或正电荷，碱性或负电荷）。
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