URT failures are the main factors influencing the safety and reliability of the operation.
城市軌道交通系統(tǒng)的事故故障是影響其運(yùn)營(yíng)安全與可靠性的主要因素.
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URT is a big project with high building and operating cost and long financial period.
城市軌道交通是一項(xiàng)建設(shè)和運(yùn)營(yíng)成本高、財(cái)務(wù)周期長(zhǎng)的巨型工程.
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