The damage during hydraulic fracturing mainly included clay swelling and grain migration, built up created by mechanical impurities, the damage of fracture conductivity and so on.
水力压裂过程中存在的损害主要包括粘土膨胀与颗粒运移损害、机械杂质引起堵塞损害、支撑裂缝导流能力的损害等。
Based on reviewy a number of materials of gold ore deposits, it may be suggested that the migration of gold is mainly in the form of colloform, simple haloids, different complexes and mechanical form.
在分析大量金矿床资料的基础上，笔者认为金的迁移形式主要有胶体、简单卤化物。多种不同的络合物和机械形式：还原、中和、吸附和络合等作用导致金沉淀：沉淀后金呈类质同象、单矿物和吸附等形式存在。
Based on reviewy a number of materials of gold ore deposits, it may be suggested that the migration of gold is mainly in the form of colloform, simple haloids, different complexes and mechanical form.
在分析大量金矿床资料的基础上，笔者认为金的迁移形式主要有胶体、简单卤化物。多种不同的络合物和机械形式：还原、中和、吸附和络合等作用导致金沉淀：沉淀后金呈类质同象、单矿物和吸附等形式存在。
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