According to the law of conservation of mass, the mathematics model of Modified-Atmosphere Packaging (MAP) is educed.

根据质量守恒定律和果蔬采后呼吸生理，推导出薄膜气调包装(map)的数学模型。

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In recent years, new demands are needed urgently on mathematics fundament of geological map with the application of global positioning system (GPS) in uranium geological exploration.

近年来，随着全球卫星定位系统(GPS)在铀矿地质勘测中的应用，对地质图的数学基础方面提出了新的要求。

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It is discussed and analyzed for mathematics foundation of administrative map, selected content and expression method.

对行政区划地图的数学基础、内容选题与表示方法、符号设计等问题进行分析与探讨。

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