departure frequency是什么意思 departure frequency怎么读
departure frequency的用法和样例
- The objective function, the expected daily profit defined as the ticket revenue minus the operating and customer waiting costs, is discontinuous at changes in the bus frequency.
目标函数是期望日利润，定义为票价收入减营运及乘客等候成本，然而，目标函数是不连续的且断点发生在发车频率改变处。
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