4个生产层理论
four production levels theory
层状层积云
stratocumulus stratiformis
二维弹性层状理论
2-D elastic layered theory
二维粘弹性层状理论
2-D viscoelastic layered theory
混凝土保护层层状剥落
delamination of concrete cover
丘状层理
hummockycross stratification
生物地层层理构造
biostratification structure