查询词典 radon

The contents of 226Ra and 232Th of honeycomb briquette were used to calculate the contribution of honeycomb briquette burning to indoor radon and thoron and their radiation dose to the residents.

应用γ能谱测定了西安市蜂窝煤中天然放射性核素226Ra、232Th和40K的含量，并初步分析了取暖期蜂窝煤燃烧对室内氡及钍射气浓度的贡献，以及所致居民剂量。

After eliminating the mutual interference , the relative error of radonand thoron measurement are –34.0% and 17.3% compared to the standard radon andthoron concentrations respectively .

理论上推导出了扣除氡钍干扰的关系式，扣除氡钍干扰后 Tn 的浓度与标准浓度相对误差为 17.3%，Rn 浓度与标准浓度相对误差为-34.0%。

The concentrations of radon and thoron as well as thoron decay products (220RnD) have been measured by using passive integral monitors in two coal mines of Beijing areas during summer and winter.

用被动式累积探测器在北京房山区史家营（中型煤矿，年产量30万吨）和城关（小型煤矿，年产量3万吨）2座煤矿井下进行了222Rn、220Rn及220Rn子体的测量。

This paper has produced the physical meaning of the water radon variation rate and the production method of the dynamic pattern of the variation rate .

介绍了水氡变化率的物理含义以及变化率动态图象的生成方法。

The GEOTOP centre develops multi-disciplinary projects such as the study of uranium-thorium-radon desequilibrium in volcanology or the study of isotopic tracers at the water-sediment interface and internal process of the earth.

此中心开展了多学科的研究项目，如火山学中铀-钍-氡消除平衡的作用研究、水沉积物分界面的同位素示踪剂研究，以及地球内部作用的研究。

Meanwhile, the approximate direction and area of waterline is obtained in the Radon domain.

实验结果验证了该算法对海岸线检测的有效性和较强的鲁棒性。

The practical algorithm of beamlet transform is studied.

本文的算法可以较好地解决这个问题，这是传统的Radon变换和Hough变换所做不到的。

Implementation of beamlet transform has been studied in this paper and it is applied in line detection in the images polluted seriously by the noise.

在直线检测中，传统的Radon变换和Hough变换是常用的方法，但这两种变换适用于形状比较规则的图像，而且图像中的直线特征比较明显，才有可能检测出来。

A quantitative appraisal of the prospect of uranium mineralization is completed based on a set of hydrochemical data acquired from the known in-situ leachable sandstone-type uranium, including radon content, acid-alkali ratio, oxidized and reduced electronic potential, hydrocarbonate radical and uranium content in water.

但是在找铀过程中仅用水化学成份、氡含量、酸碱度和氧化还原电位等数值进行描述，说明它们与铀矿化的关系，这种单一因素的描述不能综合反映与铀矿化的联系程度，以定量评价铀矿化与上述因素的关系，从而影响了水化学找矿的效果。

With the transform analysis of the edges images, the linear characteristics of the edges of the empty-trains-images were outstood.

结果表明：形态学操作有效地减弱了其他对象的边缘，得到比较满意地空列车图像的直线性质的边缘；在不同监控对象的图像的Radon变换域中的特征最大值比Hough变换域中的特征最大值有更好的可分离性。

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。