论文首先阐述了感潮河段水文现象的特点、水文设计值的研究现状。
At first, the hydrologic characteristics of the tidal reach and the current situation of design value research are elaborated.
指定设计重现期或频率的水文设计值为随机变数，有一定的分布规律，表明它有相应的不确定性。
The hydrologic design values of specific design return period or frequency are random variables having certain distribution pattern, so there are some uncertainty in it.
强调了水文频率计算中对统计参数和设计值进行综合平衡和合理性分析的重要性。
It is emphasized on the importance of comprehensive balance and rationality analysis of statistical parameters and design values in hydrologic frequency computation.
在水文频率计算中由于误差的存在，使得估计值与实际值之间存在偏差，这种偏差导致在水利工程设计中产生了不安全因素。
Due to errors of hydrological frequency calculation, the deviation between the estimated value and actual value causes the design of water conservancy projects to be insecure.
在水文频率计算中由于误差的存在，使得估计值与实际值之间存在偏差，这种偏差导致在水利工程设计中产生了不安全因素。
Due to errors of hydrological frequency calculation, the deviation between the estimated value and actual value causes the design of water conservancy projects to be insecure.
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