characteristic of effective area variation 有效面积变化特性
runoff area variation 产流面积变化
area variation regulation 区域变化规律
small area variation method 小区域变异
area of abnormal variation 异常磁区
variation of dullness area 浊音区的变化
backwater variation area 回水变动区
The stress field in surrounding rock and stress concentration area variation rules under different blasting methods was simulared by use of FLAC3D.
应用FLAC3D模拟研究了采动影响下，围岩内应力场的变化特征，不同爆破方式致裂弱化后应力集中区的转移规律。
There is huge variation in how people are affected by loud sound, however, and this is an area where a number of researchers are conducting studies.
这巨大的变化体现了噪音对人的影响有多大，然而，同时这是一个许多研究者正在努力的方向。
However, due to a considerable variation in land area, 1 population density and climatic, geological and topographical conditions, the extent of forest cover differs greatly among the island states.
然而，由于各岛屿国家的陆地面积、1人口密度、气候、地理地形条件等有很大差异，它们的森林覆盖程度也有很大差别。
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