查询词典 radon

Respirable particulate matter ; radon ; carbon dioxide ; indoor air pollution

可吸入颗粒物；氡；二氧化碳；室内空气污染

Radon transformation was used to change the artifact part to sine space, and then we obtained the sinogram.

然后用雷登变换把伪影图像变换至弦空间，即得到弦图。

An experimental study on the noise properties of x-ray CT sinogram data in Radon space.

低剂量CT断层成像的噪声抑制研究国家自然科学基金，2005-2007，课题负责人：卢虹冰，资助号：

The migration of radon and its daughters is directional, and contravenes the law of the diffusion.

实验还发现，氡及其子体的分布具有明显的方向性，而与扩散规律相违背。

Here there have been many culs-de-sac: searches for foreshocks, tilts, radon, electrical precursors and variations in velocity ratios of P-waves to S-waves have either failed or are at best unproven.

在这方面曾走进许多死胡同∶寻找前震、地倾斜、氡、电学的前兆，以及P-波或S-波速率的变化。但是，这些努力或者失败，或者在最好的情况下未能获得验证。

These results are valuable for reasonably determining the radon eduction rate in remedial action on decommissioned uranium mine.

其结果对铀矿山退役治理中氡析出率的合理确定具有一定的参考价值。

The article introduces the system structure and technical indicators of radon concentration standard equipment , it analyses the factor of inflecting quality control and the solving method,by experiments can the equipment be controlled and assured effectively in daily work.

介绍氡浓度标准装置的系统结构、技术指标，分析影响质量控制的因素及解决办法，经试验验证该装置在日常工作中能得到有效的质量控制和保证。

According to statistics, the world's total number of deaths from lung cancer are 8% to 25% due to the radon caused by inhaling air.

据统计，全世界患肺癌死亡的总人数中有8％至25％是由于以前吸入空气中的氡造成的。

But the method is more complex than velocityscanning and inside muting.

Radon变换法也是一种好方法，但不如速度扫描和内切除法简单。

Natural surface water supplies generally carry little threat of human radiation contamination because radon volatilizes into the atmosphere.

天然的地上水供应一般带有极少的对人类有危险的放射性污染物。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。