shallow gas浅层气
shallowadj.浅的;薄的n.浅滩;浅处v.变浅
shallow-pocket free settling classifier浅室型自由沉降分级机
Shallow-submarine hydrothermal activity浅海热液活动
Shallow Discussion About Designing Cupola试论冲天炉设计
shallow burying and concealed controlling浅埋暗挖
shallow-buried undermining construction浅埋暗挖
shallow embedment and concealed excavation浅埋暗挖
shallow burying and underground excavating浅埋暗挖
shallow burying and underground excavation浅埋暗挖