Terms for subject Oil / petroleum containing 凹地

Chinese	English
低凹地带	hollow zone
凸凹地形	kame-and-kettle topography
大地凹陷	geodepression
岛弧区浅凹盆地	nuclear basin
河床凹地	olletas
活动地槽式凹陷	mobile geosynclinal trough
风蚀凹地	deflation hollow