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。
Test method for printing precision: 3 words printed in full page A4 paper printed with PS.
测验打印精度办法为：用PS打印3号字打印在整版A4纸上。
As to test for impurity: a certain amount of the impurity may be added to the sample to testify the accuracy and precision of the method.
对于杂质的测定，一般取含一定杂质量的样品进行分析，证明此杂质测定其具有适宜的准确度和精密度。
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