Analysis of a chronic n-hexane poisoning accidence in printing workers .
一起慢性正已烷中毒事故调查分析。
This accidence is the latest in a series of u.s. election scandals .
这是美国大选丑闻最新的意外消息。
The accidence and syntax of mongolian is quite different from english and chinese , so the work can not imitate foreign research results , and it is necessary to study the classification system of the mongolian language .
