层状层积云
stratocumulus stratiformis
混凝土保护层层状剥落
delamination of concrete cover
巨厚不等厚砾石
thick gravel bed with unequal thickness
巨厚高速砾岩
high-velocity thick conglomerate
巨厚火成岩
extremely thick igneous rock
extremely thick igneous
巨厚煤层
Giant thick seam
mega coal seam
extremely thick coal seam
巨厚砂砾含水层
great deep sand and gravel aquifer
巨厚松散层
very thick unconsolidated layers
thick alluvium
super thick unconsolidated stratum
super-thick sediments