查询词典 radioelement
- 与 radioelement 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Experts noted that the current urban living environment is the main source of radioactive hazards of indoor radon and radioelement content standard building materials.
专家指出,目前城市生活环境中主要放射性危害的来源有室内氡气及放射性元素含量超标的建筑材料等。
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It is obvious that labeling the ASODN by radioelement is the most pivotal process.
放射性核素标记ASODN是反义显像药物合成的最关键步骤。
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They can also be used in fields range from both high and low temperature to both high and low velocity, sometime even to environment full of radioelement.
多孔质气体静压轴承能明显提高轴承的承载能力,具有更优越的阻尼特性和稳定性,故得到广泛的关注。
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Main types of indoor air pollution for formaldehyde, benzene caused by chemical pollution, biological pollution caused by bacteria and viruses radioelement and dust caused by the physical pollution.
室内空气污染类型主要为甲醛、苯引起的化学污染、由细菌病毒引起的生物污染及由放射性元素和尘埃引起的物理污染。
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Radon is the crust of rock, soil radioelement arising from the decay of a radioactive inert gases, which are mainly the lungs and bronchial have on the human body radiation.
氡是地壳岩石、土壤中放射性元素衰变而产生的一种放射性惰性气体,它主要是对人体的肺和支气管产生辐射作用。
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One, in fact, almost all taken from the natural rock, used to bake the tiles in the soil, more or less contain a certain amount of radioelement, of course, will not cause radioactive danger, when more than a certain amount of radioactive material, would pose a threat to human health.
一、事实上,几乎所有采自大自然的岩石、烧制瓷砖用的泥土等,或多或少都含有一定量的放射性元素,当然,并非都会对人体造成放射性危害,只有当放射性物质超过一定数量时,才会对人体健康造成威胁。
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The users who have installed natural stones, the department should find the identification radioelement whether extra if he has to consider where to stop.
五、如已安装天然石材的用户,应找上述部门查验放射性元素是否超标,如已超标应考虑停止使用。
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Along with the higher and higher requirements of the large-sized and ultra-large integrated circuit on the covering materials, it is necessary to be superfine as well as to be high-purity and low radioelement content, especially on particle shape.
随着大规模、超大规模集成电路对封装材料的要求也越来越高,不仅要求超细,而且要求其有高纯度、低放射性元素含量,特别是对于颗粒形状提出了球形化要求。
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My Marie Curie (1867-1934) French nationality Polish scientists to study the phenomenon of radioactive found radium and polonium two radioelement, twice the life of Nobel Prize.
居里夫人 Marie Curie(1867-1934)法国国籍波兰科学家,研究放射性现象,发现镭和钋两种放射性元素,一生两度获诺贝尔奖。
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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。
- 推荐网络例句
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Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.
在对危险的南部地区访问时,他斥责什叶派民兵领导人对中央集权的挑衅行为。
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In fact,I've got him on the satellite mobile right now.
实际上 我们已接通卫星可视电话了
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The enrich the peopling of Deng Xiaoping of century great person thought, it is the main component in system of theory of Deng Xiaoping economy, it is a when our country economy builds basic task important facet.
世纪伟人邓小平的富民思想,是邓小平经济理论体系中的重要组成部分,是我国经济建设根本任务的一个重要方面。