The importance, complexity and uncertainty of bridge hydrology calculation decides its special status in bridge design.

桥涵水文计算的重要性、复杂性、不确定性决定了其在桥梁设计工作中的特殊地位。

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Selecting design procedure and basic supporting system are also based on the complexity and uncertainty of the design task.

设计进程和设计基础支持系统的选择也有赖于设计任务中的复杂性与不确定性特点。

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Because of the complexity and uncertainty inherent in spatial problems, the description of the spatial relationship often adopts qualitative methods.

由于空间问题固有的复杂性和不确定性，空间关系的描述普遍采用定性的方法。

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The new rules allow an escape from all this complexity and uncertainty.

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Slow down now and you will move faster, further and with greater purpose later--even when, or especially when, you are staring down the triple threat of complexity, speed and uncertainty.

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This increases the level of complexity, uncertainty and risk.

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