指出了最小数学期望算子与数学期望算子的某些不同之处。
The difference between the minimum expectation and the expectation operator is shown.
另外，基于模糊变量的期望值算子做出新的评价标准用来评价信号的平均尖端度。
Besides, based on the expectation operator of the fuzzy variable, a new evaluation standard is established to estimate the average sharp degree of the signals.
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