氡发射平均系数的高低顺序是土块>普通水泥>花岗石材>红砖>预制构件>沙>石灰.

氡发射平均系数的高低顺序是土块>普通水泥>花岗石材>红砖>预制构件>沙>石灰.的英文翻译

基本释义

• The coefficients were different among the materi-als in order: sun-dried mud brick > general cement > granite material > red brick > sand > lime.