adj.侏罗纪的；侏罗系的
n.侏罗纪
There are high quality coal resources in Jurassic strata of Ordos Basin. 鄂尔多斯盆地赋存有侏罗纪优质煤炭资源。
The Jurassic formation is drilled through. 侏罗系地层已钻穿。
