对某改扩建的油码头，首先采用基于设计规范的设计方式对泊位年通过能力进行初步计算。

The annual throughput capacity of berth was firstly computed using design criteria for an enlarged oil wharf.

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然后以西江航道（桂梧段）2004年船舶运行资料为基础，对船舶流到船规律进行了分析，并计算航道通过能力，进一步验证前述理论。

Then on the base of Xijiang(Guiwu part) waterway data in 2004, analyze the randomicities of daily ship flows and calculate the waterway capacity at this waterway.

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然后以西江航道（桂梧段）2004年船舶运行资料为基础，对船舶流到船规律进行了分析，并计算航道通过能力，进一步验证前述理论。

Then on the base of Xijiang(Guiwu part) waterway data in 2004, analyze the randomicities of daily ship flows and calculate the waterway capacity at this waterway.

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