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为了掌握北京市东城区公共场所氡浓度水平，我们于１９９６年１１月至１９９７年３月对本区不同功能及类型的公共场所进行氡浓度测量，并做出放射卫生学评价。一、材料和方法１采样点的选择。以本区的公共场所不同功能与类型，及不同的通风方式为对象。按所处空间的不同...
In order to grasp the radon concentration level in public places in Dongcheng District of Beijing, we measured the radon concentration of public places with different functions and types from November 1996 to March 1997 and made radiosurgery evaluation. First, materials and methods 1 sampling point selection. To different functions and types of public places in this area, and different ventilation methods for the object. According to the different space ...