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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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plant resistance elicitor
plant resistant gene or R gene
plant resource allocation
plant respiration
plant response to soil pollutant stress
plant response to soil pollution stress
plant-rodent interactions
plant roots
Plants
plant salinity tolerance
plant salt resistance
plant salt-resistance
plant salt tolerance
plant sculpture
plant secondary metabolism
plant senescence
plant sex determination
plant single cell culture
plants in novels of Ming and Qing dynasties
plants in the essays of Ming and Qing Dynasty
plants mineral nutrition
plants mineral nutrition theory
plant sociology
Plants of Yuan Drama
plant stem cell
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