短語詞組短語measurable metric space 距離可測空間semi -normed measurable vector space 半范可測向量空間topological measurable space 拓撲可測空間product measurable space 積可測空間lebesgue measurable space 勒貝格可測空間Fuzzifying Measurable Space 模糊化可測空間 返回 measurable space