Top Brushing System 顶部刷洗系统
brushing of tunnel top 挑顶
C. and A.D. 500 by brushing away the dark top layer of barren desert to reveal the light, sandy soil underneath, wrote Clive Ruggles, an archaeologist from the University of Leicester in the United Kingdom, in an email.
MSN: Peru's mysterious Nazca Lines form a labyrinth, says study
应用推荐
模块上移
模块下移
不移动