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regional population flow
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regional population flow
Encyclopedia
工学
区域规划
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regional population flow
区域人口流动
人口为了某种特定的目的(如务工经商、工作调动、学习培训、随迁家属、投靠亲友等),从一个地区的居住地前往另一个地区的目的地的人口转移行为。发生流动行为的人口称为流动人口。
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voltage measurement
voltage-multiplier rectifier circuit
voltage plateau
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voltage-proof
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voltage ratio formula of transformer
voltage-ratio formula of transformer
voltage regulating devices of transformer
voltage regulation and control
voltage regulation in rural electric power networks
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voltage source inverter by self-commutation
voltage source inverting circuit
voltage stabilizer
voltage stabilizing circuit
voltage stabilizing diode
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voltage standing wave ratio
voltage step
voltage to frequency conversion
voltage transformation ratio
voltage transformer
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