下古生界储层主要以马家沟组的泥晶白云岩和粉晶白云岩为主。
The Lower Paleozoic reservoir is Majiagou formation's putty crystal dolomite and powder crystal dolomite primarily.
储集层类型为下古生界奥陶系古风化壳型，其主力含气层为马家沟组第五段。
The reservoir type is Ordovician weathering crust in the Lower Paleozoic, and the main gas layer is in the fifth member of Majiagou Formation.
研究了矩阵列（行）一致扰动的几个性质，并应用于线性方程组。给出了线性方程组系数矩阵一致扰动下解的相对误差界。
Several properties about matrix with consistent perturbation are studied and applied into linear equations. Error bounds with the solution perturbation are given.
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