- 更多网络例句与氡相关的网络例句 [注：此内容来源于网络，仅供参考]
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Intelligent nuclear instrument has been a dominant developing direction of radioactivity measurement instrument. The instrument for radon measurement of air pulse ionization chamber, based on the theory that alpha rays decayed by radon and its progeny can ionize the air molecules, can measure the radon concentration accurately.
智能核仪器已成为放射性测量仪器发展的一个主导方向，利用氡及其子体衰变放出α射线能使空气分子电离的理论设计的空气脉冲电离室α测氡仪可以准确地测量空气中的氡浓度。
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The volume of radon chamber is 4 m3, the range of radon concentration is 370~20 000 Bq/m3, and the relative expanded uncertainty of measurement results is no more than 5.8%. The whole testing system can verify/calibrate the radon monitor and study on the radioactive aerosol of radon decay product.
装置氡室体积为4 m3，氡浓度测量范围为370~20 000 Bq/m3，氡浓度值测量结果的相对扩展不确定度不超过5.8%，可用于测氡仪器的检定校准和氡子体放射性气溶胶的实验研究。
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According to the theory of flow diffusion and convection, three-dimensional state equation of radon field is established for constant and variable diffusion coefficient and convection rate. The numerical solutions for different coefficient and different boundary conditions are obtained for two models of radon field which have respectively source in the side and inside of collapse column.
根据流体场的扩散理论和对流理论，建立了扩散系数与对流速度为常量或变量情况下的氡气场三维状态方程；对於陷落柱柱体侧面有源氡气场和柱体体内有源氡气场两种理论模型，给出了不同系数和边界条件下的数值解的形式。
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Main contents and conclusions are: 1 The ionization current was measured continuously by a charge-integration method with a computer after the introduction of radon into the chamber.
主要内容及结论：1充氡后利用计算机连续进行电离电流累积测量，得到了精细的电流随时间的变化曲线，可清楚看出氡及其子体的生成衰变造成的电离电流的生长—稳定—衰减过程，与理论计算值进行了比较，由电离电流衰减速度的变化得出氡吸附作用的影响，并测量到电离室冲洗后氡的反扩散现象；2由已知活度的标准源定出相对测量的刻度系数K值，K=24.62 Bq／pA，对同一个监测源以半年为周期进行多次测量后得出稳定性符合要求；3通过测量电离电流和气压的关系曲线以及不同气压下的饱和曲线，确定了常规的工作条件；4测量了盐酸清洗电离室内表面降低本底的效果；5不确定度分析表明相对测氡的扩展不确定度(k=2)小于5％，由本底涨落得出探测下限为0.5 Bq；6理论上对壁损失修正进行了计算，实验上保持电离室工作在饱和区的情况下，测量了不同气压下电离电流的变化，从中得出了壁损失随气压变化的规律，可以看出，电离电流的实测值和计算值随气压变化规律基本一致；当气压大于125 kPa时，端效应等其它因素造成的影响不大于2％，因而在此工作条件下，测量电离电流后通过计算修正壁损失可以实现近似的绝对测氡，提出了进一步提高绝对测量准确度的方法。
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Environment radon is mainly from rock and soil in geological environment, but the research is not connected with geological environment now. On the basis of physical field, the theoretical distribution model of radon in soil and exchange model of earth—air are set up by using Fick diffusion law and Dacy law, and then the research of environment radon is linked with geological environment. This paper described how the evry parameter of the theoretical model influence the radon concentration in air. The results of research indicat that molecule diffusion of radon is different from it's eddy form. Under the condition of surface radon source, the model experiment is used to study the transportation and distribution of radon in medium. The data of experiment show the relationship between radon and depth can be described by exponent. If the radioelement is well—distributtion, the concentration of radon in different depth or in different point at the same depth change with time, but the accumulated exhalation amount of radon at different point on the surface of model are close in relative long time. The author studied the exchange of radon between mediums and verified the theoretical models too.
环境氡主要来自岩石、土壤，而目前环境氡研究中与地质环境结合很少，为此作者以物理场为基础，运用气体运移的费克扩散定律和达西定律，建立起壤中氡浓度分布与大地—大气间氡交换理论模型，首次在理论上将环境氡与地质环境结合起来；论文中从理论上讨论了模型中各参数对空气中氡浓度的影响，发现空气中氡运移的分子扩散方式和湍流扩散方式存在明显差异；通过面状氡源条件下的氡运移模型实验，研究了介质中氡的运移与分布，实验数据表明氡浓度随深度的变化规律可用指数函数描述，在放射性元素分布均匀的条件下，介质中不同深度和同一深度不同点的氡浓度随时间而变，但介质表面不同点在较长时间内向空气中累计释放的氡的量是相近的；同时研究了不同介质间氡的交换，并验证了所建立的理论模型；运用理论模型预测青岛市城区壤中氡浓度、江西临川一住宅区空气中氡浓度及江西二个测区的区域空气中氡浓度分布，取得了较好的效果。
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This paper consults the key technology in the radon measurement device in the national and international and we thinks over the characteristic of α-ray which emit by radon and its daughter, so that decides to use the α-ray spectrum to measure radon.
论文从测量氡及其子体放射出的α射线入手，瞄准国内外测氡装置关键技术发展趋势，结合氡及其子体α能谱测量特点，采用α能谱测氡的途径来完成这一工作。
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Chen rui1,zhou shu-min2(east china institute of technology, 344000 fuzhou, china)abstract: radon chamber is a standard equipment which demarcates radon measure instrument. this paper introduces a high- speed data acquisition card called pci- 8408 based on pci bus, and data collection is controlled automatically by device driver using mcgs.
氡室作为刻度测氡仪器的一种标准装置有着重要的应用，本文利用pci-8408光隔离开关量输入输出接口卡作为数据采集接口，根据采集数据对氡室气路进行控制，并通过mcgs组态软件以设备驱动程序的方式控制继电器的状态，实现氡的自动补给和排放以及氡室内温湿度的智能控制。
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Radon and thoron calibration factors are 1.78 and7.63 respectively , the relative error of radon concentration ERS-2 measured is 3.0%compared to the standard radon concentration and thoron is 3.2%. We deduced theequations which can eliminate the mutual interference between radon and thoronmeasurement .
通过 ERS—2 氡析出率仪器的研究，对 ERS—2 测量析出率中道址的选择以及扣除氡钍干扰问题进行了讨论，氡道道址设置为 60—115，钍道道址设置为 119—128，氡钍的刻度系数分别选为 1.78 和 7.63，测得的氡浓度与标准氡浓度的相对误差为 3.0%，测得的钍射气浓度与标准钍射气浓度的相对误差为 3.2%。
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Based on soil radon gas survey in Quanzhou City and Jinjiang City, the authors conducted an investigation of the soil radon gas environment in an area of some 465 km2. The results indicate that radon gas concentrations in soils of Quanzhou and Jinjiang urban areas are at a lower level, whereas those in soils of Quanzhou and Jinjiang suburbs are at a fairly high level. It seems that the radon gas concentration is mainly related to geological background: radon gas concentrations in soils derived from weathering of adamellite, moyite, and biotite schist are higher than those in soils derived from weathering of other rock types.
通过泉州市、晋江市土壤中氡气测量，取得约465 km2土壤氡气环境调查成果，从结果来看，泉州市区和晋江市区土壤中氡气浓度普遍较低；市郊主要为山地，土壤中氡气浓度普遍较高；从土壤中氡气浓度水平的分布来看，土壤中氡气浓度水平主要与地质背景有关，二长花岗岩、钾长花岗岩、钾长浅粒岩及黑云片岩风化土壤中氡气浓度明显高于其他地质背景来源土壤。
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Six field measurement sections with dozens kilometers were performed with a real-time radon gauge and a air radon gauge , financed by Chinese Geological Survey. The results show that the Radon concentration is 6.7 Bq/L in field soil and 16.7 Bq/m3 in the air .
在中国地质调查局&四川成都经济区域城市生态地球化学评价&项目的成都市地空界面氡浓度的调查与评价实践中，进行了大量的实验和野外测量，结果表明成都市原野壤中氡浓度水平平均值为6.7Bq/L，空气中平均氡浓度为16.7 Bq/m~3，土壤中氡浓度整体是西部和东部偏高。
- 更多网络解释与氡相关的网络解释 [注：此内容来源于网络，仅供参考]
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radium emanation：镭射气, 氡
radium content 镭含量 | radium emanation 镭射气, 氡 | radium equivalent 镭当量
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emanator：射气测量计 测氡仪
emanative 放射性的 | emanator 射气测量计,测氡仪 | emanatorium 射气治疗院
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niton：氡
(北京中新电)中国的一项最新科研成果发现,"氡"(niton)是仅次于吸烟的肺癌诱因,如果生活在室内氡浓度为每立方米200贝克的环境中,相当于每人每天吸烟15根.
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radon：氡
具体数值由有关国家根据自己的实际情况在此范围内选定决定. 这里 ICRP进行了两项改进:取消待建住房和已有住房的划分;用氡的实测浓度取代了平衡当量浓度. 名称由来:"氡"(radon)是另一种元素"镭"(radium)的名称的变体.
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radon daughter：氡产物
氡产物 radon daughter | 无氡气体 radon-free gas | 雨量计 rain gauge
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radon survey：氡气测量
radon 氡 | radon survey 氡气测量 | rafaelite 斜羟氯铅矿
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emanium：氡
放射性气体埃曼测量计 emanator, radioactive-gas | 氡 emanium | 氡 emanon
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radon seed：氡源
radon effect seismic predictor 氡效应地震预报装置 | radon seed 氡源 | radwaste system 放射性废物系统
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radon seed：氡源, 氡种
radon effect seismic predictor 氡效应地震预报装置 | radon seed 氡源, 氡种 | radwaste system 放射性废物系统
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radon seed implanter：氡放射源植入器
radon meter 氡量计 | radon seed implanter 氡放射源植入器 | radon 氡