After pyrolysis, the polydispersion is retained in the carbon aerogel, however, the diffuse interface layer disappears due to migration of the layer to particles to reduce the interface energy.

有机气凝胶中存在的扩散界面层在其裂解过程中消失，这可能是由于在裂解过程中扩散界面层向粒子迁移以降低界面能所致。

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At last the paper summarized the oil pool-forming models in Yanchang oil field as nearby accumulation type, along-layer migration type and trans-layer migration type.

从油气运移的角度将延长矿区成藏模式归纳为就近聚集型、顺层运移型和穿层运移型三种类型。

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Carbon migration induces the formation of carbon-enriched layer in the austenitic weld metal and carbon-denuded layer in the Cr-Mo steels base metals.

碳扩散的结果是在紧邻熔合界面的焊缝金属一侧形成高硬度的增碳层，母材金属一侧产生硬度较低的贫碳层。

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