The British Proclamation of 1763, the war of 1812, geological barriers and the lack of modern-day transportation all provided resistance against westward migration.

英国1763年公告、1812年战争、地理阻隔和现代交通的缺少都对向西迁移产生了阻碍。

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When oil enters the hole of water-wet sandstone driven by pressure difference, oil migrates following a line of less resistance because of the migration force of oil is bigger than that of water.

油在压差驱动下注入亲水砂岩孔隙的过程中，油的运移阻力比水大，因而，油往往沿阻力较低的有限通道运移。

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The results show that there is not any evidence of silver migration within LTCC construction, and conductor adhesive force, wire-bonding strength and insulation resistance are high.

结果表明：基板内部的银导体不存在迁移现象，导体的附着力、键合强度以及基板的绝缘电阻等性能均比较理想。

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