问题描述：
注:不是<新编日语>.
问题解答：
Recent years, China has over 1,500 metres freestyle projects emerged in a number of outstanding athletes, and the overall standard has been noticeably improved. By 1993-2005, the National men's 1,500 m freestyle ranked eight major achievements statistical analysis shows that the 10 years of my 1500 metres freestyle project development status, identify the causes that affect their development, provide for the future development of long-distance freestyle frame of reference. In a large number of relevant documents and access to data, the use of documentation law, and comparative analysis of several reasons Statistics Law Act studied 1993-2005 period 1500 metres freestyle projects my performance, age, geographical and tactical development of the status quo. My man found 1993-2005, 1500 metres freestyle win is the law of development of ups and downs rise. In the part-time delivery performance, and fluctuations in general is not great, whenever the results will be delivered in a clear improvement. Changes Chengbolang-age trends. While all aspects of China's 1500 metres freestyle developments vary, but the overall level and top level in 10 years time it has made very significant improvement.
Keyword : Games Swimming Competition ;1500 metres freestyle;
Year-end ranking results
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