[合集] RADON 怎么治?# Living
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aiyin (GG) 于 (Tue Aug 2 22:21:15 2005) 提到:
RADON 怎么治?
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amnesia (gamertag: luckycx) 于 (Tue Aug 2 22:21:53 2005) 提到:
这到底是什么啊,是一种什么化学元素?
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payan (沛言) 于 (Tue Aug 2 22:26:20 2005) 提到:
氡
the heaviest of the inert gasses, occurs naturally
(especially in areas over granite) and is considered a hazard to health
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soundview (老夫子) 于
aiyin (GG) 于 (Tue Aug 2 22:21:15 2005) 提到:
RADON 怎么治?
☆─────────────────────────────────────☆
amnesia (gamertag: luckycx) 于 (Tue Aug 2 22:21:53 2005) 提到:
这到底是什么啊,是一种什么化学元素?
☆─────────────────────────────────────☆
payan (沛言) 于 (Tue Aug 2 22:26:20 2005) 提到:
氡
the heaviest of the inert gasses, occurs naturally
(especially in areas over granite) and is considered a hazard to health
☆─────────────────────────────────────☆
soundview (老夫子) 于