The air survey is specially superior in the regional environmental radioactivity survey, which is recommended by IAEA.

在区域环境放射性测量中，航测具有特殊的优势，是IAEA推荐的手段。

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Its mainly used in air survey, aviation remote sensing, satellite sea observation, astronautics reconnaissance, picture match guidance and so on.

主要用于航空测量、航空遥感、卫星海洋观测、航天侦察、图像匹配制导等。

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In 2016, only one fourth of Chinese cities met the country's air quality standards, according to a survey of 338 cities nationwide from the Ministry of Environmental Protection.

根据环境保护部对全国338个城市的调查，2016年，只有四分之一的中国城市达到了国家的空气质量标准。

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The Air Survey is part of the OPAL project, which is funded by the Big Lottery Fund.

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