Decades before footprints were generally recognized as important evidence, Ward carefully covered them with a milk pan to shield them from the fine mist that had begun to fall.
在此十多年前，足迹一向被视为重要证据，沃德用一只牛奶盘小心的将足迹盖住，防止被开始升腾的雾霭所破坏。
Optimum analysis for the back-ward earth pressure has been studied, the best monitoring scheme of shield lining and the worst monitoring scheme of shield lining has also been acquired.
开展了管片工作土压力的反演最优解分析，得到了监测方案的最优布置方案和最差布置方案。
Optimum analysis for the back-ward earth pressure has been studied, the best monitoring scheme of shield lining and the worst monitoring scheme of shield lining has also been acquired.
开展了管片工作土压力的反演最优解分析，得到了监测方案的最优布置方案和最差布置方案。
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