Investigators say design flaws in steel plates holding the bridge together may be to blame for the disaster.
Investigators say design flaws in steel plates holding the bridge together may be to blame for the disaster.
调查员表示紧固桥梁的钢盘的缺陷可能是造成这起灾难的主要原因。
Investigators say design flaws in steel plates holding the bridge together may be to blame for the disaster.
调查员表示紧固桥梁的钢盘的缺陷可能是造成这起灾难的主要原因。