The Silk Road originated in Chang＇an （Xi＇an today） and linked the land routes of countries from Transoxiana, the Persian Gulf, and the Mediterranean Sea. It is the trunk road over which China historically carried ...The Silk Road originated in Chang＇an （Xi＇an today） and linked the land routes of countries from Transoxiana, the Persian Gulf, and the Mediterranean Sea. It is the trunk road over which China historically carried out economic, trade, and cultural exchanges with Central Asia, West Asia, South Europe, and North Africa; the diligent and courageous people living in this region worked together with a friendship and cooperation that is still widely praised today.展开更多
When a new high-speed railway(HSR)is planned,one of the most important elements to consider in decision making is the economic and social balance of the system.For this purpose,the life cycle cost(LCC)of the principal...When a new high-speed railway(HSR)is planned,one of the most important elements to consider in decision making is the economic and social balance of the system.For this purpose,the life cycle cost(LCC)of the principal components is essential.Obviously,the extension of the life cycle for each element is a clear indicator of the total LCC and,in the case of rolling stock。展开更多
文摘The Silk Road originated in Chang＇an （Xi＇an today） and linked the land routes of countries from Transoxiana, the Persian Gulf, and the Mediterranean Sea. It is the trunk road over which China historically carried out economic, trade, and cultural exchanges with Central Asia, West Asia, South Europe, and North Africa; the diligent and courageous people living in this region worked together with a friendship and cooperation that is still widely praised today.
文摘When a new high-speed railway(HSR)is planned,one of the most important elements to consider in decision making is the economic and social balance of the system.For this purpose,the life cycle cost(LCC)of the principal components is essential.Obviously,the extension of the life cycle for each element is a clear indicator of the total LCC and,in the case of rolling stock。
