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重庆理工大学材料科学与工程学院材料实验技术基础课件 BET吸附法测定粉体的比表面积。
PHOTOGRAMMETRIC RECONSTRUCTION AND 3D VISUALISATION OF BET GIORGIS, A ROCK-HEWN CHURCH IN ETHIOPIA
heritage recording Lalibela rock churches
2015/3/6
Around 1200 AD, a number of remarkable rock churches were constructed in Lalibela, a town in northern Ethiopia. One construction
manner stands apart in its uniqueness. This is the rock-hewn monolithi...