| 2. | With developing fuzzy mathematics , the importance of set value mapping has been highlighted , so that the upgrade of all kinds of the structures , such as ordered , topological measurable structure , etc , have been considered
模糊数学理论的发展突出了集值映射的重要性，各种数学结构需要由论域向其幂集上提升，如序结构的提升，拓扑结构的提升，可测结构的提升等等。 |
