radon

Radon is known to be harmful to humans in large quantities.

众所周知，大量的氡会对人体造成伤害。

Objective Study on radon pollution in tunnel and protection from the radiation.

目的研究坑道内氡浓度及工作人员的氡防护.

The environment Radon logger FD 216 is an instantaneous surveying instrument in situ.

FD216型环境氡测量仪是在现场瞬时测量氡的仪器.

A radioactive, inert, gaseous isotope of radon a half-life of 3.92 seconds.

氡的一种放射性的, 惰性的和气态的同位素,其半衰期为3.92秒.

There is an acknowledged risk of lung cancer from radon.

氡被认为有诱发肺癌的危险。

Radon concentration in groundwater was measured at 18 points including two continuous recording stations.

测量了包括两个连续记录台站在内共18个点的地下水的氡浓度.

But in two dimensions, Radon transform is not local.

但在二维平面上, Radon变换不具有局部性.

Scintillation flask method for measuring radon concentration in the air.

空气中氡浓度的闪烁瓶测量方法.

A radioactive, inert, gaseous isotope of radon, with a half-life of 3.92 seconds.

锕射气氡的一种放射性的, 惰性的和气态的同位素, 其半衰期为3.

Radon is the daughter of radium.

氡是镭的子体.

The radon level in the basement was impermissibly high.

地下室的氡含量超标.

INTERNAL CAUSES OF RADON AND ITS DAUGHTERS UPWARD MIGRATION AND CLUSTER PHENOMENON.

氡及其子体向上运移的内因与团簇现象.

The radioactive dust will contribute to higher levels of uranium and radon.

放射性尘埃会形成铀和氡的高值.

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.

Sections 301-311, added in 1988, relate to indoor radon abatement.

1988年增加的第301—311条, 涉及的是室内氧的控制问题.