'宣言 Public MustInherit Class LinearGaugeBaseBuilder (Of TControl As LinearGaugeBase, TBuilder As LinearGaugeBaseBuilder(Of TControl,TBuilder)) Inherits GaugeBuilder(Of TControl,TBuilder)
public abstract class LinearGaugeBaseBuilder<TControl,TBuilder> : GaugeBuilder<TControl,TBuilder> where TControl: LinearGaugeBase where TBuilder: LinearGaugeBaseBuilder<TControl,TBuilder>