电离层不规则结构
ionospheric irregularities
Ionospheric irregularity
Inospheric irregularities
平面不规则结构
irregular plan structure
asymmetric-plan structure
竖向不规则结构
vertically irregular structure
vertical irregular structure
vertically irregular fames
不规则堆石护面结构
random rubble armoured structure
不规则高层建筑结构
irregular high-rise structures
结构竖向不规则
vertical structural irregularity
竖向不规则钢结构
vertically irregular steel structure
强非规则结构负载
highly irregular structured workload