Over 150 companies bid for licences divided into regions and cities, allowing operators to cobble together nationwide coverage or concentrate their efforts.
We can also introduce the concept of an interest coverage ratio, with monthly income divided by interest expense.
我们还可以引入一个利息保障倍数的概念，用月收入除以利息支出。
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Coverage ratio a leverage ratio, represented as earnings before fixed charges and taxes divided by fixed charges. Fixed charges include interest, required principal repayments, and lease expenses.