青云翻译

Nearly 50 years, China built more than 5000 km desert railway, has accumulated a wealth of technical achievements, the preparation of the relevant complete specification of the system, while, as this area of ??engineering and technical personnel, is also very necessary to combine the existing anti-

Near more than 50 years to, in China built has more than 5,000 more km desert area railway, accumulation has rich of technology results, prepared has system full of related specification, while, do for this aspects of engineering technicians, also very has necessary combination both of anti-Sha engi

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正在翻译，请等待...

Near more than 50 years to, in China built has more than 5,000 more km desert area railway, accumulation has rich of technology results, prepared has system full of related specification, while, do for this aspects of engineering technicians, also very has necessary combination both of anti-Sha engi