The method was adapt broad crested weir theory derivation to calculation flood rate of discharge and conjecture design rate of discharge through field investigate information of bridge.

该计算方法是通过实地调查桥前水深等资料，采用严密的宽顶堰理论推导，求得洪水流量，进而推求设计流量。

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Two days later a device was delivered to Labour politician Ms Godman's constituency office in Bridge of Weir, Renfrewshire.

BBC: Parcel bombs sent to Neil Lennon, McBride and Godman

It is thought he later walked across the bridge at the Lagan Weir and fell in.

BBC: Joby Murphy had been missing for about four weeks