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Secondly, the tailings pond was distinguished from the stope due to their entropy difference in the panchromatic image at a 7 × 7 window size. This remote sensing method could be beneficial to safety and environmental management in the mining area. Keywords: spectral characteristics; texture; ...
Race Against Time中学英语课外阅读阅读材料英国的癌症晚期少年斯蒂芬·萨顿在与时间赛跑,其列出46项遗愿清单中的第一项就是希望为青少年癌症信托基金筹集100万英镑的善款,用以帮助更多的人改善生活.现在他的这个愿望早已实现,善款早已超过300万英镑.为了鼓励斯蒂芬做出的努力,英国首相卡梅伦去医院看望他,并且与他合影留念...