'宣言 Public Overloads Overrides Function Evaluate( _ ByVal oldResult As IAggregationResult(Of Nullable(Of Single),Nullable(Of Single)), _ ByVal value As Nullable(Of Single) _ ) As IAggregationResult(Of Nullable(Of Single),Nullable(Of Single))
public override IAggregationResult<Nullable<float>,Nullable<float>> Evaluate( IAggregationResult<Nullable<float>,Nullable<float>> oldResult, Nullable<float> value )