辐射的
- 与 辐射的 相关的网络例句 [注:此内容来源于网络,仅供参考]
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The magnitudes of influence of advection, turbulence, and radiation decrease with time.
平流、湍流、辐射的效应及其总效应皆随时间推移而减小。
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Vitamin A not only can synthesize inspect amaranthine qualitative, it is clearer to still can make the eye sees a thing below dark light, accordingly, green tea not only can eliminate computer radiant harm, still can be protected and raise eyesight.
维生素A不但能合成视紫红质,还能使眼睛在暗光下看东西更清楚,因此,绿茶不但能消除电脑辐射的危害,还能保护和提高视力。
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Then we got involved with trying to find polymers that attenuate radiation.
接著我们致力于找出能够减弱辐射的聚合物。
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The works in the project just done can be summarized as five respects.(1) A device was designed to fabricate the asymmetrical resonant cavities by a pendant drop. A series ARCs with variable parameters provides a valuable experimental method for investigating the characteristics of ARCs.(2) The relationship between the number of active modes and the shape parameters in an ARC was investigated. The experimental lasing threshold was compared with theoretical result, the good agreement between two shown that it was the decrease of the number of active modes in an ARC that decreased lasing threshold.(3) Dye lasing gain was used to enhance the signals of stimulated Raman scattering of the weak gain Raman modes in a circular cavity made by a pendant drop, the instantaneous SRS spectra of weak gain Raman modes in ethanol was obtained by this new method.(4) The SRS signals of minority compound in a binary chemical complex was obtained by using dye lasing gain method. The detection concentration of minority compound was reduced to an order compared with normal SRS method.(5) A cylindrical circular cavity was formed by a liquid jet, which was used to reduce the pump intensity required for laser induced plasma spectroscopy. The limit of detection of trace element in aqueous sample was greatly decreased by this new method.
我们设计并成功制作了使悬垂液滴连续变形的装置,用此装置可以方便地改变非圆对称谐振腔的几何参数,为ARCs的研究提供了一种有效的实验方法;研究了ARCs中活性模式数和变形参数间的变化规律,激光阈值的数值计算结果和激光辐射的实验结果作了比较,二者吻合的曲线说明ARCs中活性模式数量的减少是受激辐射放大阈值降低的原因;在由单元化合物构成的微型圆对称谐振腔中,首次尝试用"激光增益"增强弱增益拉曼模式的受激拉曼散射信号,获得了乙醇分子中弱增益拉曼模式的瞬态SRS光谱;在由二元混合物构成的微型圆对称谐振腔中,用染料的激光增益增强了少量化合物的SRS信号,把少量化合物的SRS信号探测浓度降低了近一个数量级,在SRS应用于瞬态过程的组份分析方面做了卓有成效的探索;用石英毛细管形成的稳定液拄构成拄形谐振腔,降低了激光诱导等离子体光谱需要的激励能量,有效地降低了水相样品的痕量元素分析极限,为LIPS应用于微量元素的化学分析开拓了一条新的技术路线。
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This thesis analyzes the types and art trait of solar-assisted heat pump water heater, the development trend of direct expansion solar-assisted heat pump water heater, makes a summary of these research results from six aspects. On the basis of these works and from the point of view of receiving optimum solar radiation , the thesis develops a novel design model of direct expansion solar-assisted heat pump water heater with a truncated cone collector/evaporator, theoretically analyzes the heat that the system can absorb, compares its ability with other two types of cylinder and flat plate ones, and calculates COP and EER with computer aids. The results show that a truncated cone direct expansion solar-assisted heat pump water heater can absorb not only more solar energy but heat energy in air. It takes on favorable thermal performance. Under the average day in February which is of the worst weather throughout the year in Kunming, the COP is about 4. 2, EER is about 2.9 . The heat absorbed by the system are more than those of the other systems. The system is very great in terms of saving
本文分析研究了太阳能热泵热水系统的分类及技术特点,直膨式太阳能热泵技术国内外发展趋势,从六个方面对直膨式太阳能热泵热水系统的研究进行了归纳总结;在此基础之上,从太阳辐射的最佳接收考虑,提出了集热器/蒸发器为圆台侧面的圆台型直膨式太阳能热泵热水器的设计模型,理论上分析了这种热水系统所接收的太阳辐射和得热量,并与圆柱型、平板型的直膨式太阳能热泵热水系统进行对比分析,通过计算机辅助模拟计算出:系统不但可以有效地吸收太阳能,还能有效地吸收空气中的热量,具有良好的热性能;在昆明,以2月为代表的冬季,其太阳辐照较低,系统的制热系数COP值也能达到4.2,效能比EER值为2.9;系统的得热量高出圆柱型、平板型的直膨式太阳能热泵热水系统,节能效果明显。
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Different from those predominantly body-confronted movements as football which are like a fight between solders at close range, golf is more like a generals' battle. It not only shows the graceful art of the gestures, but also incarnates the will, absorption, intelligence and confidence of the golfer. The objects of golf are those minded, intellig ent and endurant successful people, thus the attracted company must be high-class.
如果说足球等以肢体为主的对抗运动像将士在战场上的短兵搏杀,凸现的是肢体艺术,辐射的是大众群体,高尔夫就更像是统帅之间的较量,不仅体现在优雅的肢体艺术,更体现明星的意志、专注、智慧、信心,是精神上的对决——高尔夫战场的辐射对象是那些有思想、有智慧、有毅力的成功人士群体,因而高尔夫运动吸引的商家也必须是高端的。
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Because thedetecting of the metal object is important in both military and civil applications, wefocused on the aim and do lots of measurement of the radiometric characteristic ofseveral objects correlating to the metal detecting and got the datum. We also completedthe inversion algorithm of retrieving the brightness temperature from the measureddatum.2 The radiometer is the apparatus of incepting the MMW radialization and is the key partof all passive MMW detecting and imaging system. Our emphasis of radiometerresearch was on a kind of AC radiometer, we discussed its principium, composing andthe recovery of its distorted output signal. Finally we gave out the design of the ACradiometer.3 The focal plane system is the main passive MMW detecting and imaging system atpresent.
由于对金属目标的探测在军民应用两方面都很重要,因此文中围绕着对金属目标探测这一中心,对几种相关物体的毫米波辐射特性进行了大量测量实验,获得了相关数据,并进行了亮温反演,给出了计算结果。2毫米波辐射计是接收物体毫米波辐射的高灵敏度接收机,是所有被动毫米波探测成像应用的核心部件,因此文中对毫米波辐射计进行了相关研究,重点研究了用于扫描探测的交流辐射计的原理、构成及其失真信号的补偿问题,并完成了一种交流辐射计的系统设计。3毫米波焦平面系统是当前被动毫米波探测成像的主流系统。
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Because thedetecting of the metal object is important in both military and civil applications, wefocused on the aim and do lots of measurement of the radiometric characteristic ofseveral objects correlating to the metal detecting and got the datum. We also completedthe inversion algorithm of retrieving the brightness temperature from the measureddatum.2 The radiometer is the apparatus of incepting the MMW radialization and is the key partof all passive MMW detecting and imaging system. Our emphasis of radiometerresearch was on a kind of AC radiometer, we discussed its principium, composing andthe recovery of its distorted output signal. Finally we gave out the design of the ACradiometer.3 The focal plane system is the main passive MMW detecting and imaging system atpresent.
由于对金(来源:ABc1C论文8f8f网www.abclunwen.com)属目标的探测在军民应用两方面都很重要,因此文中围绕着对金属目标探测这一中心,对几种相关物体的毫米波辐射特性进行了大量测量实验,获得了相关数据,并进行了亮温反演,给出了计算结果。2毫米波辐射计是接收物体毫米波辐射的高灵敏度接收机,是所有被动毫米波探测成像应用的核心部件,因此文中对毫米波辐射计进行了相关研究,重点研究了用于扫描探测的交流辐射计的原理、构成及其失真信号的补偿问题,并完成了一种交流辐射计的系统设计。3毫米波焦平面系统是当前被动毫米波探测成像的主流系统。
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In this thesis, the radiation principle and the structure of slot antenna are studied and the impacts on its performance of every structure parameter in a slot antenna design are analyzed. On this foundation, a design plan of planar slot array antennas is proposed. The design has some structural feature as follows:(1) with different dielectric layers and microstrip line structure to guide the electromagnetic wave effectively;(2) the feeding network formed of microstrip line can match with the radiating slots expediently;(3) in order to increase the bandwidth of the antenna, the wider slot and branched feeding microstrip line are adopted to form a double resonance.
本文对缝隙辐射的原理、缝隙天线的结构作了探讨,分析了缝隙天线设计中各结构参数对其性能的影响,并在此基础上提出一种平面型缝隙天线的设计方案,它具有以下的特点:(1)采用分层结构,以不同的介电系数和微带线结构形成对电磁波的有效引导;(2)利用微带线构成馈电网络可以方便地与辐射缝隙进行匹配;(3)增大缝隙的宽度,并利用馈电微带线的枝节形成双谐振,以增加天线的带宽。
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Several main results on the evolutions of the life and environment on early earth are summarized as follows:(1) the oxygenation of surface environment didn''t cease until a stable stage for 0.4Ga appeared after 1.6Ga;(2) compared to the isotopic compositions of kerogens and coexisted carbonates, the differences between two can effectively carrier the signals from local environments and bio-assemblages;(3) multiple isotopic relationships between kerogens and individual alkanes in Proterozoic samples were observed, which would depend on the specific biogeochemical processes;(4) repeated biogeochemical changes were observed accompanying Neoproerozoic glaciations, which suggesting that environmental rather than evolutionary forces were driving the biogeochemical changes;(5) the bio-radiations after Neoproterozoic glaciations were definitely suggested by molecular and isotopic data to be at the early Cambrian and after the middle of Doushantuo deposition with different triggers for them.
研究获得以下重要认识:(1)古元古代地表环境的氧化可能一直持续到中元古代早期(约1.6Ga),而在此之后的4亿年里则保持相对稳定;(2)相对于传统的干酪根和碳酸盐的碳同位素组成,二者之差则能更好反映区域环境的演化特征;(3)在元古代干酪根与单体烷烃类之间存在多种碳同位素组成关系;而其与不同的生物地球化学过程有关;(4)全球海洋生物地球化学特征随新元古代多次冰期出现循环波动,这显然为环境因子的驱动;(5)在新元古代大冰期之后,分子与同位素数据显示地球生命在陡山沱中后期和早前寒武纪出现两次大辐射,然而两次生命辐射的本质却是不同的。
- 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。