... conservation of area 面积守恒 ; 面积保守 principle of conservation of area 面积守恒原理 Ngorongoro Conservation Area 保护区 ; 恩戈罗恩戈罗自然保护区 ...
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The basic principle and application in dynamic inspecting of water and soil conservation in drainage area of 3S is introduced in this paper.
介绍了3S技术的原理，阐明了其在小流域水土流失动态监测中的应用。
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