本影
- umbra
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[umbra] 指影子中光源完全照射不到的部分,影子为完全阴暗;如有部分光线形成半明半暗区域,则是其半影
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这是本影和阴影边缘之间较亮的区域。
This is a lighter area between the umbra and the edge of a shadow .
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这种旋涡结构可能是由于A本影的逆时针自旋运动造成的。
The formation of this spiral structure may be caused by the anti-clockwise spin of umbra " A " .
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用无本影装置测定中子照相射线束的准直比
Determination the Collimation Ratio of Neutron Radiography Beams Using NU Device
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太阳黑子本影点的分析研究
An analysis and study of umbral dots in sunspots
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这包括对太阳黑子本影和半影持续的观测。
This includes the continuous survey of umbra and penumbra of the sunspot .
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云南天文台观测到的黑子本影点
Sunspot Umbral Dots Observed at the Yunnan Observatory
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月球本影和半影没有扫过的地方,根本看不见日食。
Penumbral lunar Benying and did not sweep the place , simply can not see the solar eclipse .
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图片中心的明亮辐射源据信是超新星爆发过程中产生的中子星。这时如果地球和月亮的中心大致在同一条直线上,月亮就会进入地球的本影,而产生月全食。
The bright source at the center of the image is presumed to be a neutron star created during the supernova .
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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。
But near the east limb , the boundary toward the limb is more diffuse , and that toward the center is sharper .
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这张照片,满月的表面部分被地球上的云遮住,而右上角的部分处于地球的本影之中。
Pictured above , the face of a full moon is partly blocked by Earth 's clouds , and partly darkened on the upper right by Earth 's umbral shadow .
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如果某个时刻月球本影比地球与月球之间的距离大,地球上被月球本影扫过的地带就可以看到日全食。
If a moment of Earth and the Moon Benying than the distance between the moon , the moon on Earth was Benying sweep of the area will be able to see Riquan Shi .
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老黑子中发现一个反常光桥,它是在两个本影合并起来时形成,而不象通常在黑子将分裂时出现。
It was found that an anormal light bridge formed in the old main spot when the two umbrae merged into one instead of the opposite case , i. e. , one umbra split into two .
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本影雕机操作容易,结构简单,成本低廉,一经调试完毕运行极其稳定,能够达到实用水平和走上市场。
This machine is easy to operate , the structure simple and the cost is low . After finishing the movement the debugging is to be extremely stable it can achieve the practical level and steps onto the market .