Subordinate Degree Function (SDF)的用法和样例：
例句
- A genetic algorithm with a dual fitness function was proposed.
摘要提出一个具有对偶适应度函数的遗传算法。 - The target track in the niultisensor multitarget tracking fusion contains the fuzzy information which was described by the fuzzy membership function.
摘要多传感器多目标跟踪融合中的目标航迹包含了模糊信息，这种模糊信息可以用模糊隶属度函数来描述。
