adj. acidoid
酸性胶体
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酸性胶体法 acid colloid method
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此阶段，环境从中碱性缓慢过渡到中酸性，金以胶体或氯化物络合物形式迁移。
During this stage, the pH value of the ore-fluids was slowly changed into medium-acidic properties. As a result, gold transported as colloid or the complex of chloride.
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