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frontier port city
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frontier port city
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frontier port city
边境口岸城市
位于各国陆疆国境线内的边境地区,拥有经政府批准的、为对出入国界及特定地区的人员、货物和交通工具实现检查与管理而设立的边境口岸,具有特殊机构和职能的外向型城市。又称沿边口岸城市。
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permanent shadow region
permanent slope
permanent sprinkler system
permanent succession
permanent summation
permanent swap file
permanent threshold shift
permanent threshold shift,PTS
permanent tooth
permanent way overhaul train
permanent way tamping machinery
Permanent wilting point
permanganate index
permatron
permeability
permeability blind zone
permeability calculation
permeability coefficient
permeability determination method
permeability effect
permeability heterogeneity intensity
permeability, magnetic conductivity
permeability measurement
permeability of biological tissue
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