SINCE the founding of New China, various types of bridges have been built across the 5,400-kilometre-long Yellow River. Speaking of highway bridges alone, up to now there are more than 30.Until 1949,...
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SINCE the founding of New China, various types of bridges have been built across the 5,400-kilometre-long Yellow River. Speaking of highway bridges alone, up to now there are more than 30.Until 1949,...