同时提供接口和抽象类是多余的，但我发现这样很方便：在大多数情况下，我只需要抽象类，但接口支持多继承性。
Offering both an interface and an abstract class is redundant, but I find it convenient: in most cases, I only need the abstract class, but the interface enables multiple inheritance.
前者多为继承性盆地，含油层系多、远景好，后者多为残余盆地，含油气情况复杂。
The former are mostly an inherited basin, with various oil-bearing sequences and better oil potential; and the latter are mostly a residual basin, with complex hydrocarbon condition.
应用推荐