A method of complex background character location based on multiple bi-level classification is proposed.

提出了一种基于多次二值分类的复杂背景字符定位方法。

youdao

Evolution of chemical matter and its level classification are not two irrelevant problems but two aspects of a problem.

化学物质的进化和化学物质的层次分类，是一个问题的两方面，而不是两个不相关的问题。

youdao

Conclusion: the new emergency 4 level classification system may be more suitable for nuclear accidents emergency rescue than the current 3 level system.

结论：新的应急体系(4级体系)比原体系(3级体系)更适合于核事故应急救援。

youdao

Either way, it's clearly beyond the threshold for classification as an INES level seven event, although an order of magnitude lower than the 5.2 million TBq released from Chernobyl.

BBC: Fukushima: As bad as Chernobyl?

The World Health Organization in June declared a Level 6 worldwide pandemic, the organization's highest classification.

CNN: Use 'common-sense' steps against H1N1 virus, Obama says