The difference of PC and NC in different economic level group had statistical significance(P<0.001).
不同经济水平组NC、PC的差异都有统计学意义（P<0.001）。
Assume the predetermined significance level is 0.05.
假设预定的显着性水平是0.05。
Therefore, a quick, intelligent and accurate sludge level detection system has great significance.
因此，研究出一种准确快捷的智能化泥水界面检测系统有很大的意义。
In particular, we should tell the restaurant to improve the overall significance level of service.
特别是要讲清提高餐厅整体服务水平的意义。
So improving the diagnostic awareness and diagnostic level have great significance.
因此，提高对pte的诊断意识和诊断水平有重要意义。
So improving the diagnostic awareness and diagnostic level have great significance.
因此，提高对pte的诊断意识和诊断水平有重要意义。
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