karst造句
91. A type of topography formed in areas of widespread carbonate rocks through dissolution. Sink holes, caves and pock-marked surfaces are typical features of a karst topography.
92. The structure of and rock extremly complex in the discordance formation system in Karst area.
93. Many coal mine in our country suffers from the Ordovician period Karst containing water inrush frequently due to the complex geology condition, Water inrush is a serious disaster in coal mining.
94. The resource protection and development livelihood is the relative and restrictive issue the Karst mountainous area.
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