局部出现砂质页岩薄层和碳质碎屑。
Thin layers of sandy shale, and carbonaceous fragments are locally present.
做了光学玻璃、砂质页岩和砂岩等材料试样点荷载试验。
The point-load tests were performed for the specimens of optical glass, arenaceous shale and sandstone.
做了光学玻璃、砂质页岩和砂岩等材料试样点荷载试验。
The point-load tests were performed for the specimens of optical glass, arenaceous shale and sandstone.
应用推荐