在波高和周期频率分析时,首要的问题是决定选用资料的最恰当年份数。选用年份数多,资料分析的工作量也必然大;选用年份数过少,其结果又缺乏应有的可靠性。由于这是关系到工程造价和安全的重要问题之一,因而引起工程设计人员的重视。 In wave height and periodic frequency analysis, the most important issue is determining the most appropriate year for the selection of the data. Select the number of years, the workload of data analysis is bound to be large; too few to choose the number of years, the results of the lack of due reliability. As this is one of the important issues that affect the project cost and safety, it has drawn great attention from engineering designers.