radon gas 中文意思是什麼
radon gas
解釋
氡氣-
Radon is a gas that comes from the radioactive decay of radium in rocks
氡是來自巖石中鐳輻射衰變而產生的氣體。 -
Worried about radon gas, worried about asbestos
擔心氡氣，石棉所帶來的危害 -
This paper describes the basic principle of radon gas survey and, with an analysis of the result of radon survey performed over the known blocks in the xiazhuang granite uranium orefield, illustrates the effectiveness of such survey in the prospecting for deep concealed uranium deposits
摘要介紹了氡氣測量的基本原理，通過分析其在下莊花崗巖型鈾礦田上已知礦段的測量結果，來說明氡氣測量是尋找深部隱伏鈾礦床的有效手段。 -
Some of this last third are known : genetic predisposition, ultraviolet sunlight, pollutants such as pesticides, and other factors including cosmic radiation and a naturally occurring radioactive gas called radon
已知的這些原因有：基因缺陷、日光的紫外線輻射、殺蟲劑之類的污染物，其他的原因包括宇宙射線和自然產生的放射性氣體? ?氡。 -
On the basis of distribution of radioactive elements and geological background, the theory equation of radon exhalation rate is derived from the decay rule of radioactive elements and gas diffusion
根據放射性元素分佈規律、地質背景及放射性元素衰變等，建立了計算氡析出率的理論公式。 -
In this paper, a three - dimensional ( 3d ) program for the three - dimensional reactive flow fields of complicated geometric nozzle, which governed by the compressible full navier - stokes equations with realizable k - s turbulent model, has been upbuilt by using full implicit couple arithmetic and fvm ( finite volume method ) based on understanding and assimilation of a two - dimensional program group of cr ( chamber - radon ). the new program fulfils the urgent need of numerical tools for simulating three - dimensional reactive flow - fields of hylte ( hypersonic low temperature ) and other latest nozzles, for which cr is out of action in simulation, and can be applied to simulate other chemical laser system, such as chemical oxygen iodine laser ( coil ), overtone fluoride hydrogen, all - gas iodine laser, and so on. furthermore, some related topics about nozzles design and engineer ing also have been discussed
本文在二維cr （ chamber ? radon ）程序研究的基礎上，採用有限體積方法和完全隱式的耦合演算法，通過求解帶realizablek -兩方程湍流模型的多組分、有反應的三維完全納維埃?斯托克斯（ n ? s ）控制方程，建立了一套能夠對復雜形狀的三維噴管和光腔進行數值模擬的三維程序，解決了連續波df hf化學激光器增益發生器設計缺乏三維數值模擬工具的問題，並用該工具解決了cr程序無法實現的hylte等復雜三維噴管流場的理論模擬問題。 -
Radon gas in the environment, particles of the fire - resistant material asbestos and air pollution also increase the risk
環境中的氡氣、防火材料石棉的顆粒以及空氣污染也會增大患肺癌的風險性。
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