Analyze the main index, which include API, primary pollutant, air quality level, in 86 cities of china from Urban Ambient Air Quality Daily Report of 2006.
收集了2006年《重点城市空气质量日报》中中国86个重点城市空气质量主要分析指标——空气污染指数（A PI）、首要污染物、空气质量级别，并对数据进行统计分析。
In this paper, the current periodic inspection regulation system for pressure vessel and pressure piping in China is briefly introduced, comparing to related API standards and codes and RPs.
简要介绍了我国现行压力容器、压力管道定期检验规范体系，并与相应的API规范进行了对比分析。
The factory is the only one in China that has been qualified by API (American Petroleum Institute) and it is also the appointed factory to produce diesel engines for China's shipbuilding industry.
本厂是中国唯一一家已经获得了API(美国石油学会)，它也是指定厂家生产的中国造船业的柴油发动机。
The factory is the only one in China that has been qualified by API (American Petroleum Institute) and it is also the appointed factory to produce diesel engines for China's shipbuilding industry.
本厂是中国唯一一家已经获得了API(美国石油学会)，它也是指定厂家生产的中国造船业的柴油发动机。
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