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problem regions
释义
problem regions
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problem regions
问题区域
存在一种或多种区域性困难且若无中央政府援助则难以靠自身力量解决这些困难的区域。是由中央政府区域管理机构依据一定的规则和程序确定的受援对象。又称问题地区(Problem Areas)、受援地区(assisted areas)、困难区域(distressed regions)、危机区域(crisis regions)、落后区域(backward regions,lagging regions)、欠发达区域(less developed regions)、缺乏优势区域(less advantaged regions)、不发达区域(undeveloped regions)、萧条区域(depressed regions)、膨胀区域(excessive growth regions)、拥挤区域(congested regions)、开发地区(development areas)、特别开发地区(special development areas)、内城地区(inner city areas)、边缘区域(peripheral regions)、边远区域(frontier regions)或自然条件极端区域(regions with extreme natural condition)等。
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ecological design
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ecological engineering
Ecological Engineering for the Rural Household Economy
ecological engineering in aquacultural ponds
ecological engineering of agricultural microbiology
ecological engineering sciences
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