VTˆVTˆˆˆˆ100VTRTRV− 若加入人口迁徙的影响，则可考虑各年度的 净迁徙 （ Net Migration ），令，其中，t和2Nxt分别为女性和男性第t年x岁的净人口迁徙數，。
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Gallup also compiled a list of countries where “net migration” would be strongest by totting up how many desired to emigrate from a given place as well as the number who wished to move there (see chart).
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net migration rate 净迁移率
international net migration 国际净迁移
annual rate of net migration 年净迁移率
the net migration 净迁移人口
Net Migration Rate Between Provinces 跨省净迁移率
Net International Migration 净国际迁移
net overseas migration 净海外移民
The UK`s Home Office intends to tighten visa regulations for international students to reduce the country`s annual net migration and cope with high domestic unemployment.
为减少本国每年净移民人数，应对国内居高不下的失业率，英国内政部计划提高留学生签证的门槛。
Data released in November showed 577,000 immigrants arrived in Britain in 2007, 14,000 fewer than the year before (although emigration fell faster, lifting net migration).
十一月发布的数据显示，2007年有五十七万七千移民来到英国，比2006年少一万四千(虽然移民减少，但纯移民增加)。
Net migration from eastern European countries, which reversed when Britain's economy collapsed, is rising sharply again, points out Carlos Vargas-Silva of Oxford's migration Observatory.
来自牛津大学移民观察的Carlos Vargas - Silva指出，尽管英国经济衰退，来自东欧国家的净移民数却又一次激增。
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