上元古界—下古生界
upper-proterozoic-lower-paleozoic
塔河下古生界
Lower Paleozoic in Tahe Oilfield
下古生界气藏
Lower Paleozoic gas reservoir
下古生界潜山
Lower Paleozoic buried hill
古生界的厘定
determination of the Paleozoic
古生界盐构造
Paleozoic salt structures
上古生界储层
upper palaeozoic reservoirs
上古生界煤系
Neopaleozoic coal-bearing series
上古生界气田
early Palaeozoic gas field
上古生界天然气储集层
Upper Paleozoic gas reservoir
震旦系－下古生界
Sinian system-lower Paleozoic