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meridian plane     
相关语句
  子午面
     It has realized a measuring accuracy of 0.46 microseconds (r.m.s) when the satellite rotates at a rate of 100 r/min in the sector meridian plane of the satellite ranging from -29.5° to +29.5°.
     其在卫星子午面内的扇形视场为 - 2 9.5°~ + 2 9.5° ,当其随星体按 10 0r/min的速率旋转时 ,可实现 0 .4 6 μs(r.m .s)的测量精度 .
短句来源
     On the meridian plane, from earth center distance 6REto 16RE, the peak value of the induced electrical field is increasing.
     当子午面内地心距离由6R,变化到16RE时,感应电场峰值呈逐渐增大趋势;
短句来源
     In this paper, the vertical uniformly distributed load acting along the middle surface of the Ellipsoid shell is represented by the triangular series of angle θ between the meridian plane and the plane XOZ in any point of shell.
     将沿椭圆球壳中面铅直作用的均布荷载,表示成为任意点处的子午面与XOZ平面夹角θ的三角级数。
短句来源
     This paper also presents the perpendicular flux distributions of protons on a particular geographical meridian plane (100?E).
     同时,本文还给出了100°E子午面内质子垂直强度的分布。
短句来源
     Numerical results present propagation features in meridian plane of CME events triggered at different places of solar surface and numerically testify the effect of propagating CME deflecting to current sheet.
     模拟结果给出在太阳表面不同位置触发CME事件在太阳子午面内的传播特征,数值上验证了CME向电流片的偏转传播效应。
短句来源
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  午面
     It has realized a measuring accuracy of 0.46 microseconds (r.m.s) when the satellite rotates at a rate of 100 r/min in the sector meridian plane of the satellite ranging from -29.5° to +29.5°.
     其在卫星子午面内的扇形视场为 - 2 9.5°~ + 2 9.5° ,当其随星体按 10 0r/min的速率旋转时 ,可实现 0 .4 6 μs(r.m .s)的测量精度 .
短句来源
     On the meridian plane, from earth center distance 6REto 16RE, the peak value of the induced electrical field is increasing.
     当子午面内地心距离由6R,变化到16RE时,感应电场峰值呈逐渐增大趋势;
短句来源
     In this paper, the vertical uniformly distributed load acting along the middle surface of the Ellipsoid shell is represented by the triangular series of angle θ between the meridian plane and the plane XOZ in any point of shell.
     将沿椭圆球壳中面铅直作用的均布荷载,表示成为任意点处的子午面与XOZ平面夹角θ的三角级数。
短句来源
     This paper also presents the perpendicular flux distributions of protons on a particular geographical meridian plane (100?E).
     同时,本文还给出了100°E子午面内质子垂直强度的分布。
短句来源
     Numerical results present propagation features in meridian plane of CME events triggered at different places of solar surface and numerically testify the effect of propagating CME deflecting to current sheet.
     模拟结果给出在太阳表面不同位置触发CME事件在太阳子午面内的传播特征,数值上验证了CME向电流片的偏转传播效应。
短句来源
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  “meridian plane”译为未确定词的双语例句
     A general expansion in Taylor series of space magnetic field (median plane symetry ornonsymetry) expressed in terms of the field in the φ=φ_0 meridian plane, which may beexpressed analytically or by field values at discrete nodes, is derived in cylindrical coordinatesystem.
     本文推导了在柱坐标系下用φ=φ_0子午面上的磁场来表示的空间场(平面对称与非对称)的普遍泰勒级数展开式,平面场可由解析或离散形式给出。
短句来源
     The Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) project is one of the five National Major Scientific Projects undertaken by the Chinese Academy of Science. LAMOST is a quasi-meridian reflecting Schmidt telescope laid down on the ground with its optical axis fixed in the meridian plane.
     大天区面积多目标光纤光谱天文望远镜(Large Sky Area Multi-Object Fiber Spectroscopy Telescope,简称LAMOST)是由中国科学院建设的国家九五大科学工程之一。
短句来源
     Based on generalized non-linear strength theory proposed by the author and combined with mechanics characteristics of rock materials, a generalized non-linear strength theory for rocks is established. The failure function of the theory is a smooth curve between SMP criterion and Mises criterion in the π plane and is an exponential curve in the meridian plane.
     在已提出的广义非线性强度理论的基础上,结合岩石材料的力学特性,建立了岩石广义非线性强度理论,该理论在π平面上的破坏函数为介于SMP准则和Mises准则之间的光滑曲线,在子午面上的破坏函数为幂函数曲线.
短句来源
     In this paper the concentration and velocity of particle on meridian plane of two-phase jet flow are measured by using PIV technology simultaneously.
     笔者采用PIV技术,能瞬时测量气固两相射流轴对称平面上粒子浓度分布、粒子运动速度。
短句来源
     This paper deals with the expressions of the yield criteria for perfect plastic rock-soil in stress space and strain space, and the characteristics of the yield curves on a meridian plane and a π plane.
     本文讨论了理想塑性岩土屈服条件在应力空间和应变空间中的表达形式,以及在子午平面上和π平面上屈服迹线的特点。
短句来源
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  meridian plane
The approximating Fourier method yields a splitting of the 3D problem into a set of 2D problems on the meridian plane of the given domain.
      
We develop a method for the reduction of the Dirichlet problem for the Stokes flow function in a simply-connected domain of the meridian plane to the Cauchy singular integral equation.
      
Dirichlet Problem for the Stokes Flow Function in a Simply-Connected Domain of the Meridian Plane
      
For an unbounded domain of the meridian plane with bounded smooth boundary that satisfies certain additional conditions, we develop a method for the reduction of the Dirichlet problem for an axisymmetric potential to Fredholm integral equations.
      
We obtain new integral representations for an axisymmetric potential and the Stokes flow function in an arbitrary simply-connected domain of the meridian plane.
      
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Employing one dimensional flow method which is taken as the foundation for designing the radial flow impeller, this article gives a brief description of a design method for the single-bend radial blade with higher and secondary cylindrical parabola of radial flow impeller as well as the double-bend radial flow impeller of a secondary cylindrical parabola used in modern turbine impeller. The calculation of inlet expanding angle of impeller of gas compressor and a design method for the radial oblique impeller...

Employing one dimensional flow method which is taken as the foundation for designing the radial flow impeller, this article gives a brief description of a design method for the single-bend radial blade with higher and secondary cylindrical parabola of radial flow impeller as well as the double-bend radial flow impeller of a secondary cylindrical parabola used in modern turbine impeller. The calculation of inlet expanding angle of impeller of gas compressor and a design method for the radial oblique impeller of smaller inlet angle are discussed and a method for calcluating the cross-sectional area of the canal between the bend blades and an approximate plot method of the contour of flow passage in the meridian plane of the impeller are also suggested.

一元流方法是径流式叶轮设计的基础.本文论述用一元流方法设计径流式叶轮高次和二次圆柱抛物面叶型的单弯形径向叶片及用于近代涡轮叶轮的二次圆柱抛物面叶型的双弯形径向叶片的设计方法和步骤,讨论压气机叶轮进口扩张角的计算方法及进口扩张角较小的径向偏斜式叶轮的设计方法;提出了用一元流方法.计算弯曲叶片槽道截面积的计算方法及叶轮子午面流道型线的快速逼近作图法.

In view of the limitation of the traditional meridian circle with which theposition of a heavenly body can not be absolutely dedermined in lower latitude areas, a method is suggested in the present article of absolutely determining the azimuth and equatorial point of the graduated circle of the meridian circle by making the observations in the meridian direction and the direction at an angle of 60 degrees to the meridian plane in lower latitude areas and the equatorial zone. The determination . accuracy...

In view of the limitation of the traditional meridian circle with which theposition of a heavenly body can not be absolutely dedermined in lower latitude areas, a method is suggested in the present article of absolutely determining the azimuth and equatorial point of the graduated circle of the meridian circle by making the observations in the meridian direction and the direction at an angle of 60 degrees to the meridian plane in lower latitude areas and the equatorial zone. The determination . accuracy of this method is estimated and its applicable range is also discussed in this papes.

本文针对传统的子午环不能在低纬度地区作天体位置绝对测定的局限性,提出了在低纬度地区和赤道区用子午方向和偏离子午面60°方向的观测,绝对测定子午环的方位角和度盘赤道点的方法。文中还就这种方法的测定精度作了估计,并对它适用的范围进行了讨论。

The radio telescope (PEKG 9395) of Beijing Observatory at 3.2 cm began to practice the absolute calibration and daily relative measurement of solar flux density in 1965. A pyramidal horn used as a standard antenna for measuring gain of the paraboloid antenna used in daily calibration was designed. The size of the horn is 36.1 cm ×29.1 cm ×240 cm. As a standard noise power a hot noise source boiling water was developed. The effect temperature that the hot noise source supply is about 373 K. The rms. error is...

The radio telescope (PEKG 9395) of Beijing Observatory at 3.2 cm began to practice the absolute calibration and daily relative measurement of solar flux density in 1965. A pyramidal horn used as a standard antenna for measuring gain of the paraboloid antenna used in daily calibration was designed. The size of the horn is 36.1 cm ×29.1 cm ×240 cm. As a standard noise power a hot noise source boiling water was developed. The effect temperature that the hot noise source supply is about 373 K. The rms. error is ±0.24 K.The gain of the paraboloid antenna with diameter of 2m used in daily calibration was obtained by the method to measure the solar emission using the horn antenna and paraboloid antenna in turn. The experiment arrangment is shown in Fig, 2. The experiment was carried out repeatedly in 1965, 1968, 1969, and 1978. The results were consistent and are shown in table 1. T.(h), the distribution of the background noise temperature of the paraboloid antenna directing at zenith and meridian plane, were calibrated by the hot noise source and has been taken as "second noise standard" of daily calibration. The results are shown in table 2, and Fig. 3. The total error is about 3.6% (rms)-8% (max).The mean ratio of the solar flux density in a year between PEKG 9395 and TYKW 9400 (Toyokawa Observatory,Nagaya Univ., Toyokawa, Japan) is different from one unity by a factor of 0.02 (shown in table 3 and Fig. 4). After analysing the data it was found that the annual veriation of the ratio of solar flux density between PEKG 9395 and TYKW 9400 are caused by the annual variation of Ts(h), the distribution of the background noise temperature of the paraboloid antenna, and the correct factor of atmospheric attenuation. The annual variation of the ratio was almost removed by means of modifying the background radiation by measuring daily with a gas discharge noise tube and correcting the atmospheric attenuation (shown in Fig. 5 and Pig. 6).The accidental error of daily calibration make a few progress in late years, but it was found that the accidental error raised as the solar activity increase, because more intense active regions that cause the observed value decreasing and more bursts of GRF, PBI type that cause the observed value increasing appeared in max. Years.Through observation for one and half solar cycle, it is proved that our absolute calibration and daily relative calibration have a fine absolute accuracy and a good stability of short and long term. This method may be used in all centimeter band and long millimeter band.

北京天文台的3.2厘米波段射电望远镜(PEKG 9395)自1965年开始进行太阳流量的绝对定标及每日的相对定标.设计了一个36.1厘米×29.1厘米×240厘米的角锥喇叭作标准天线校正日常使用的抛物面天线的增益,并研制了一个沸水式热噪声源作噪声功率标准.总精度约3.6—8.0%.与日本的TYKW 9400(Toyokawa Obs.,Nagoya Univ.,Toyokawa,Ja-part)流量比值的年平均值与1的偏离不大于2%.经过把用作二级标准的太阳附近背景温度修改及大气吸收改正后,周年变化几乎完全消除.一个半以上太阳活动周内观测证明,我们的绝对定标有良好的绝对精度及良好的长期和短期的稳定性.这个方法也可用于整个厘米波段及长毫米波段的绝对定标.

 
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