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大气
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  elevated atmospheric
     Responses and Acclimatization Mechanism of Plant Photosynthesis to Elevated Atmospheric CO_2 Concentration and Temperature
     植物光合作用对大气[CO_2]和温度升高的响应及其适应机制的研究进展
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     Consequently,further researches are urgently needed on responses and acclimatization mechanism of plant photosynthesis to elevated atmospheric CO_2 concentration and temperature.
     因此,植物光合作用对大气[CO2]和温度升高的响应及适应机制的研究亟待深入。
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  “大气[”译为未确定词的双语例句
     These correlations have become key proxies for the estimation of paleoatmospheric [CO 2].
     这一关系成为推测地质历史时期大气 [CO2 ]变化的重要古生物指标之一。
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  相似匹配句对
     Maagnanimous Beijing
     大气北京
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     atmospheric corrosion
     大气腐蚀
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  elevated atmospheric
glandulifera var.brevipetiolata decreased significantly in response to the elevated atmospheric CO2 concentrations, while inCyclocarya paliurus it decreased slightly and inFicus heteromorpha there were no responses.
      
This paper deals with the problem of increased heavy metal constituents in agricultural soils due to the expanded use of fertilizers and elevated atmospheric deposition.
      
perenne, in particular rhizosphere C pools, in response to an elevated atmospheric CO2 concentration.
      
Short-term changes in bacterial and protozoan populations from the soil of plants grown under elevated atmospheric CO2 were quantified.
      
Methane production in a flooded soil in response to elevated atmospheric carbon dioxide concentrations
      
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Self-recording system is devised and used to measure potential gradient at Yenching. In fine weather the results show two maxima and two minima for a whole day. During raining potential gradient is constant at zero value, except when lightening and thunderstorm occur in which case the potential gradient changes rapidly both in magnitude and direction.

本篇所述,为在北平燕京大学用静电计及一连续记录器测量大气电位梯度之方法及结果测量方法,乃用一种均位器(eqalizer)将离地面约3至6米高之电位显示于静电计上再用照相纸将此电位制成连续记录。测量所得结果如下:晴天之电位梯度。一日之中,有二最高值及二最低值雨时梯度即降至零,且此值非至雨止不变。当闪电及雷飓时,梯度之方向与值,变易极速。且较晴天时为大。

The absorption band of water vapor at 0.94 μ is studied photographically by means of a concave grating spectrometer. Twenty eight component lines are observed and measured on a comparator as well as on a Moll microphotometer. This band shows something of a doublet form which suggests that the H2O molecule has a triangular form with the oxygen atom at the vertex of an obtuse angle. The lines agree closely with some of the absorption lines in the solar spectrum as measured by Abney in 1880.

前之研究红外光谱者类多依赖热电堆以测定光谱内光能之分布。吾人咸知红外带状光谱之接近可见部分者,其成分线排列甚密。若用热电堆万难分析而得其细微组织。作者所考察之光谱正在红外照相片感光范围之内,故得测定水汽带状光谱内各成分线之波长而具有1内之准确度。 作者所用分光仪器为一凹面光栅,其曲度半径为2公尺。该光栅面上每厘米划有线6000根,颇适合红外光谱之探讨。所用光源为一1000流明之电灯泡泡内有一一字形线圈灯丝,其所发之光穿过2公尺之105°—110℃水汽而交聚在分光仪之缝上。红外照相片经氨溶液之超度敏化后,即安置於已经配准之相片匣内,而使之感光。光之可见部分系用深红滤片割除。照光时间约 费四五十小时,然后除去滤片,照以水银光谱凡数秒,作为决定波长之标准。 用前法所摄得之光谱大都不十分清晰,其主要原因系由水汽管之太短。但用显微光度计量之,各成分线之波长不难准至1(?)范围以内。本实验所得各线若与五十年前Abney所测定太阳光谱中0.94μ附近之吸收线相比较,可见太阳红外光谱中许多吸收线系由大气中水汽所产生,而证实Abney最初之推想。惟本实验所测定之吸收线与Abney所测定太阳光谱中之对应黑线具有一等差...

前之研究红外光谱者类多依赖热电堆以测定光谱内光能之分布。吾人咸知红外带状光谱之接近可见部分者,其成分线排列甚密。若用热电堆万难分析而得其细微组织。作者所考察之光谱正在红外照相片感光范围之内,故得测定水汽带状光谱内各成分线之波长而具有1内之准确度。 作者所用分光仪器为一凹面光栅,其曲度半径为2公尺。该光栅面上每厘米划有线6000根,颇适合红外光谱之探讨。所用光源为一1000流明之电灯泡泡内有一一字形线圈灯丝,其所发之光穿过2公尺之105°—110℃水汽而交聚在分光仪之缝上。红外照相片经氨溶液之超度敏化后,即安置於已经配准之相片匣内,而使之感光。光之可见部分系用深红滤片割除。照光时间约 费四五十小时,然后除去滤片,照以水银光谱凡数秒,作为决定波长之标准。 用前法所摄得之光谱大都不十分清晰,其主要原因系由水汽管之太短。但用显微光度计量之,各成分线之波长不难准至1(?)范围以内。本实验所得各线若与五十年前Abney所测定太阳光谱中0.94μ附近之吸收线相比较,可见太阳红外光谱中许多吸收线系由大气中水汽所产生,而证实Abney最初之推想。惟本实验所测定之吸收线与Abney所测定太阳光谱中之对应黑线具有一等差数约合1.5(?)_0此等差数之产生想系由於波长单位之不同以及个别仪器误差所

Upper air visibility and vertical visibility are different from horizontal far distance visibility. They have special signifigance in aviation.In this paper the atmospheric extinction coefficieat, the upper air visibility and vertical visibility are calculated by observing the polit balloons and radiosonde balloons.The principle of visibility instrument is used that is making use of optical wedge, photoelectric cell etc, to carry out the measurement. Foitzik 1947, Duntley 1948, and some other scientists have...

Upper air visibility and vertical visibility are different from horizontal far distance visibility. They have special signifigance in aviation.In this paper the atmospheric extinction coefficieat, the upper air visibility and vertical visibility are calculated by observing the polit balloons and radiosonde balloons.The principle of visibility instrument is used that is making use of optical wedge, photoelectric cell etc, to carry out the measurement. Foitzik 1947, Duntley 1948, and some other scientists have disscnsed the problem of vertical visibility. Their method is to carry out the calculation with given atmospheric extinction coefficient, while in practical application this calculation is the second step, what we need to find out first is the atmospheric extinction coefficient. In Duntley's paper, he assumes that within the limit of discussion, the intensity of sky light is constant. But this can only be true within a very thin layer of atmosphere, as to the atmosphere which is kilometres thick, it has to consider the attenuation of light by the atmosphere. Furthermore he assumes that the anisotropy of atmosphere's scattering function is invariant with height and then it is considered as a molecular atmosphere. But this has been proved by several authors in theory and in experiment to be not true, especially in the lower atmosphere. Certainly, Duntley's calculation is not accurate and is limited in application.A correction has been given to the above mentioned assumptions in this paper. Finally, the problem of light of source visibility in night and some other materials on observation are being discussed.

高空能见度,垂直能见度是和地平远程能见度不相同的。在航空方向,高空能见度与垂直能见度具有着特殊的意义。 本文藉助于测风气球及雷送气球的观测,计算大气削弱系数,从而计算高空能见度与垂直能见度。 我们利用莎罗诺夫能见度仪器的原理:利用光楔,光电池等进行测量。

 
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