The design flaw that brought down a highway bridge in Minneapolis went undetected for 40 years. Federal safety officials ... say that, even today, government design reviews might not detect similar problems.
2008年12月10日 星期三
minnesota_bridge
The design flaw that brought down a highway bridge in Minneapolis went undetected for 40 years. Federal safety officials ... say that, even today, government design reviews might not detect similar problems.
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