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1. At present, business migration and skilled migration is a major migration trends.
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2. Migration inhibitors(alum and PVA)used for minimizing binder migration in paper are introduced. A new way to evaluate the effect of migration with the optical parameter is recommended.
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3. In migration processing, we usually require that migration datum is horizontal and that zero point for migration should be on the ground surface on which shot point and receiving points lie.
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4. In migration processing, we usually require that migration datum is horizontal and that zero point for migration should be on the ground surface on which shot point and receiving points lie.
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5. In migration processing, we usually require that migration datum is horizontal and that zero point for migration should be on the ground surface on which shot point and receiving points lie.
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