"key findings in the sweeping study included the fact that newer homes, those built within the past 25 years, had 31.5 per cent higher radon levels compared with those built before 1992."' ]5 T% w- ]& a! A& d0 p http://calgaryherald.com/technol ... eight-calgary-homes1 s8 A1 r6 W5 |% ]+ R/ ~' ]/ s
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新房严重确实是奇怪。不知有谁知道这方面的人推荐推荐
craigliu 发表于 2017-11-22 19:53 6 `: x1 b& u Z+ B( j7 G' H"key findings in the sweeping study included the fact that newer homes, those built within the past ...