例句 /

It is an open problem in the high speed railway building and operating to provide the basis for the mostly foundation of technology and operation decision-making and to summarize, calculate, evaluate the operation cost of high speed railway.

It is an open problem in the high speed railway building and operating to provide the basis for the mostly foundation of technology and operation decision-making and to summarize, calculate, evaluate the operation cost of high speed railway.

如何准确地归集、测算和评价高速铁路的运营成本,为高速铁路技术决策与经营决策提供主要依据,是高速铁路建设和运营尚待解决的问题。