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apparent diameter     
相关语句
  视直径
     (4)When θ increases, the apparent diameter of the spot decreases faster than would be expected from geometric foreshortening.
     (4)当日心角增大时,黑子的视直径下降得比由几何缩减所予期的要快些。
短句来源
  表观直径
     Study on the Apparent Diameter of Yarn in the Worsted Fabric
     精纺毛型织物中纱线表观直径探讨
短句来源
     The correlations between the apparent diameter and fabric parameters were also given.
     给出了表观直径与织物结构参数间的关系;
短句来源
     The equations between yarn apparent diameter and fabric parameters were achieved using step-wise regression method. The accuracy of equations was validated that except the error of filament apparent diameter exceeds 23% the equation has a good prediction with the error below 10%.
     利用多元统计分析方法建立了表观直径与织物结构参数之间的关系方程,验证结果表明:除纬向化纤长丝对方程有较大的误差平均误差率大于23%之外,方程对其范围内的织物平均误差控制在10%以内。
短句来源
  “apparent diameter”译为未确定词的双语例句
     Particle size analysis shows the apparent diameter of the three agents varies from 13-250 nm and all possess good solubility of higher than 0.4%.
     研究表明,低含量银、噻苯咪唑的Ag-CMCTS-TB均具有良好的水溶性,其溶解度都大于0.4%,其0.2%(w/v)的抗菌水溶液中的表观粒度在13-250nm之间;
短句来源
     ③ The apparent diameter increase gradually following the decreasing of the amount of extender.
     随扩链剂用量减少 ,表观粒径基本趋势是逐渐增大。
短句来源
  相似匹配句对
     Study on the Apparent Diameter of Yarn in the Worsted Fabric
     精纺毛型织物中纱线表观直径探讨
短句来源
     The apparent viscosity of the juice increases with decrease of diameter of the pulp.
     随着果肉加入量的增加,流体的非牛顿性越强,表观黏度越大; 小粒径的果肉使果汁的表观黏度增大。
短句来源
     On Apparent Partnership
     论表见合伙制度
短句来源
     and the fruit diameter, T.
     果实直径、T.
短句来源
     Apparent Partnership
     表见合伙论
短句来源
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  apparent diameter
Final consumption of C is followed by TiCx spherule growth by combined Ostwald ripening and grain coalescence mechanisms resulting in an apparent diameter of 2.5 μm.
      
The apparent diameter of twist-free major ampullate fibre was found to be highly variable-by as much as ±20% relative to the mean within a 0.6 mm length.
      
A formula in terms of the exponential map is derived, which reveals for any observer in an arbitrary pseudo-Riemannian space-time the apparent diameter (i.e., the angular diameter) of any distant object.
      
To determine the apparent diameter of the Sun, it is first necessary to measure the shape of the intensity profile of the solar limb with an imaging optical system (hereafter denoted as a solar-limb profile).
      
The difficulty of the determination of the center of gravity of a planet depends on the fact that it has usually a large apparent diameter.
      
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This paper consists of three parts. In the first part the 16-dish E-W interferometer of the Mi-Yun Station,Pe- king Observatory(working frequency 146 MHZ)is decribed.Measured instrumental parameters are compared with theoretical ones.Thus the measured beamwidth was 5′.4(5′.3 theoretical),the first sidelobe level amounted to 5%(4.5% theoretical)and the locations of grating lobes in the celestial sphere were very close to the theoretical positions.These show that the surveying of baseline,the installation of antennas...

This paper consists of three parts. In the first part the 16-dish E-W interferometer of the Mi-Yun Station,Pe- king Observatory(working frequency 146 MHZ)is decribed.Measured instrumental parameters are compared with theoretical ones.Thus the measured beamwidth was 5′.4(5′.3 theoretical),the first sidelobe level amounted to 5%(4.5% theoretical)and the locations of grating lobes in the celestial sphere were very close to the theoretical positions.These show that the surveying of baseline,the installation of antennas and the adjustment of transmission lines are reasonably accurate in our case. The observations of the quiet sun and the slowly varying component are described in the second part.In contrast to the results obtained by some authors(e.g.by O'Ob- rien),we found that the apparent diameter of the meter-wave sun had not varied during the descending phase of the solar cycle. In the third part of this paper the results of measurements of type-Ⅰ sources are analyzed.According to the rate of occurence of type-Ⅰ bursts,the sources are classified into four classes.It is found that(1),the average height above photosphere of so- urces of all classes as measured at the central region of the solar disc was 0.24-R_⊙;(2), the E-W distribution of sources was asymmetric with respect to the solar meridian,in agreement with the result of Fokker;(3),the frequency distributions over the solar disc were different for sources of different classes.The sources containing more type- I bursts decreased more rapidly than the continuum sources with respect to the height;(4),the correlation between the commencement of noise storms with the appearance of optical flares seemed to be rather weak.This differed from the result of Mallinge; and(5),the occurence of noise storm sources was closely connected with the mean flare index of the plage region.As shown in fig.10,for all plage regions asso- ciated with large sunspots and strong magnetic fields,the mean flare index had an average value of 14.33(light solid line,fig.10),among these regions for those also containing meterwave sources,this value rose up to 27.15(heavy solid line,fig.10), while for those which did not possess meter-wave sources,the average index was 7.32 (Chain line).

全文分三部分:第一部分描述了北京天文台密云工作站的东-西16面天线干涉仪系统(工作频率146兆赫),并将仪器参数的实测结果与理论予期值相比较.第一旁瓣5%,瓣宽5.4.方向瓣在天球上的位置也都与理论预期相差不大.第二部分描述了宁静太阳及其缓变成分的观测.在太阳活动下降期没有发现米波太阳视直径的变化.第三部分分析了 I 型源的观测结果.米波源的高度我们测定在过日心径时为光球之上0.24R☉.检查不同类型噪暴源按日心径的分布,得出随着高度的增加 I 型源的噪暴成分比起连续的增强辐射下降得要迅速.在与光学现象的对应上,噪暴的起始似乎与耀斑的发生的相关性不强.噪暴源却与谱斑区的平均耀斑指数有密切关系.

Yunnan Observatory obtained white-light fine-structure photographs of a circu-lar, regular and stable sunspot which passed across the solar disk during April 9-20, 1976. In this investigation the widths of the penumbrae, umbra and the whole sunspot at various heliocentric angles 0 are measured. Through analysis it is found that the Wilson effect (A. Wilson, 1774) involves complex regularities unknown before. They are mainly.(l)When the spot is near the east limb of the solar disk, it displays the posi-tive Wilson...

Yunnan Observatory obtained white-light fine-structure photographs of a circu-lar, regular and stable sunspot which passed across the solar disk during April 9-20, 1976. In this investigation the widths of the penumbrae, umbra and the whole sunspot at various heliocentric angles 0 are measured. Through analysis it is found that the Wilson effect (A. Wilson, 1774) involves complex regularities unknown before. They are mainly.(l)When the spot is near the east limb of the solar disk, it displays the posi-tive Wilson effect (f>1, see eq. (l)). When it is near the west limb, it displays the negatire Wilson effect (fapparent diameter of the spot decreases faster than would be expected from geometric foreshortening.(5)When the spot approaches the west limb, the penumbra toward the disk-center has no tendency to disappear.A sunspot model is proposed which can qualitatively explain the above regulari-ties (Figs. 8-12).

云南天文台拍到了1976年4月9—20日过日面的一个圆形、规则、稳定黑子的白光精细结构照片。本文测量了其在不同日心角时的半影、本影和整个黑子的宽度,分析的结果发现威耳孙(A. Wilson, 1774)效应包含许多过去未知的复杂的规律性,主要有: (1)当黑子在东边缘附近时表现正常的威耳孙效应(向日面边缘和中心的半影宽度之比f>1),在西边缘附近时为负效应(f<1)。 (2)黑子在西边缘附近时,向日面中心的本影-半影边界较弥散,另一边的较清晰。但当它在东边缘附近时,向边缘的本影-半影边界较弥散,另一边的较清晰。 (3)产生威耳孙效应的主要原因是黑子向日面中心一边的加强了的缩减。 (4)当日心角增大时,黑子的视直径下降得比由几何缩减所予期的要快些。 (5)当黑子接近日面西边缘时,向中心一方的半影没有消失的趋势。 本文提出了一个黑子模型,可以定性地解释上述各种规律性。

Based on various experiments and testing, the authors analysed and investigated the stru-ctural characteristic of air-jet textured yarn, such as hairiness. luster, softness, elasticity,pilling density of single filament, apparent diameter, absorbency, etc.

本文在各种实验和测试的基础上,分析研究了喷气变形纱表面毛羽、表面光泽、柔软及弹性、单丝堆积密度、表观直径、透气吸湿等各个方面的结构特性。

 
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