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- Rn Radon 氡
- Heating can reduce the emanation coefficient of Rn effectively, which can be used as a new measure to defend against radon and radon daughters. 灼烧法是一种有效降低氡射气析出率的方法,可作为对氡射气及放射性子体的防护手段加以利用。
- Where does the indoor radon come from? 室内氡气是从哪里而来?
- Can I have more than one RN number? 一家公司可以拥有多个RN代码吗?
- How does radon affect the human body? 氡气对人体有什么影响?
- No. We assign only one RN number per company. 不可以。一家公司只可以有一个RN代码。
- How long does it take to get an RN number? 多长时间就可以得到RN代码?
- Radon is the daughter of radium. 氡是镭的子体。
- A radon progeny continuous monitor was developed. 本工作研制氡子体连续测量仪。
- Eren Berber,Nora L,Flesher RN,et al. 吴沛宏，李立，张益民。
- Oermann Phd Rn Faan, Kathleen B. 放大图片 作者: Marilyn H.
- The daughter nuclides of radon and thoron tend to become attached. 氡和钍射气的子体易被气溶胶吸附。
- If ventilation is poor, radon will accumulate in indoor areas. 如室内空气不流通,散发出来的氡气会积聚在室内。
- Your RN is subject to cancellation if you fail to do so. 如果及时更新，您的RN代码就会取消。
- Radon and Decay Products-is There a Risk Outside the Lung? 氡及其子体对肺以外的组织器官是否有危险?
- What if my business moves after I obtain an RN number? 如果在得到RN代码后，公司发生变化，那么该怎么做呢?
- Richard Nixon: RN (New York: Grosset Dunlap, 1978), p.1042. 1996年12月6日对理查德?切尼的采访。
- Welcome to stay in our Radon Spring Chengtian Grand Hotel! 欢迎你下榻我们氡泉承天大酒店！
- It can he used to survey radon content both in air and soil. 它能对室内和室外空气和土壤中的氡，能进行现场，瞬时探测。
- And RN An R.N. must have at least a 2-year nursing degree. 注册护士必须至少要有一个2年制的护理学位。
