以下为句子列表：
英文: The original flow rate formula of parobolic throat flume used for U-shaped channel is implicit function and is not convenient for calculation in irrigation districts.An simplified formula is developed in this paper,with a di fference between results calcu
中文: 用于U形渠道量水的抛物线形喉口式量水槽原流量公式为隐函数形式，针对其使用不便的现状，通过理论分析推导出了显函数形式的量水槽流量公式，计算结果与原流量公式比较相对误差值＜0.5%。
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