The experimental results show that the precision test method based on continued-fraction approximation is more effective, less complex and achieves faster convergence.
结果表明，该方法在精度测试方面更有效，复杂度更低，收敛速度更快。
Truncating that continued fraction can give you a best rational approximation.
截断，连分数可以给你一个最佳有理逼近。
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