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- target angular size 目标角尺寸
- As a natural limit for angular resolution, one may take the angular size of the central diffraction disk. 我们可以取中心衍射环的角直径作为角分辨率的一种自然极限。
- This Witch's Broom actually spans over three times the angular size of the full Moon. 这支女巫扫帚的视角大约是满月的三倍。
- Since the distance between the Moon and the Earth is not constant, the angular size of the Moon can have a small variation. 由于地球和月球的距离并不固定,所以在地球看来,月球的角大小亦会出现变化。
- The combination of very large radio flux and exceedingly small angular size means that the sources have a fantastic surface brightness. 极大的射电流量同极小的角经集于一身，意味着这些发射源有难以置信的高表面亮度。
- Accurate for the exact time of today's Solstice, this composite image also shows the Sun at the proper scale (about the angular size of the Full Moon). 除了精确计算今天夏至的时间外，这张合成影像还显示了太阳真正的尺寸（大小与满月的角大小相当）。
- The intervening matter between the source and the observer gravitationally deflects and focuses the light bundle, increasing the apparent angular size of the source. 光源与观测者之间的物质对光束产生引力偏折和聚焦作用，使光源的视角径加大。
- By means of building modelling with the target angular displacement and its sliding model variable structure controller of transmission ratio control electromotor, the parameters of entire controller are defined. 通过对速比控制电机目标角位移、角位移滑模变结构控制器的建模，来确定整个控制器的设计参数。
- On the basis of the 81.5 MHz interplanetary scintillation observation of Cygnus-A, a lower limit to the apparent angular size (>6") for the hotspots has been determined. 本文讨论了在81.;5兆赫频率上天鹅座A射电星系的闪灼观测的结果;得出热斑视角径的下限为6角秒;它比5000兆赫上的热斑角径2角秒大得多。
- Because the Moon circles the Earth in an elliptical orbit, its angular size depends on how close the Moon is to closest approach (perigee) or furthest distance (apogee). 由于月球绕地球运行轨道为椭圆形，其视角的大小取决于月球在近地点或远地点如何程度的靠近或远离。
- Planets can be billions of times fainter than the star around which they orbit and are typically located at separations smaller than 1/2000th the angular size of the full moon from their star. 行星的亮度可能只是它们所围绕运行的恒星亮度的几千万分之一，而且这些行星与恒星的分离通常在与恒星满月时的视角1/2000还小的角度。
- Thus, we can use our hands to measure roughly the angular sizes of various objects. 换句话说,我们可以用自己的手作量角器,量度天体的大小或距离。
- They differ in size but not in kind. 这些东西的区别只是大小不同而实质一样。
- The torpedo homed in on its target. 鱼雷射向目标。
- The company has met their export target. 该公司已经实现了它们的出口目标。
- And the mid- size car have a lot more legroom. 而且中型车的腿部伸展空间较为宽敞。
- A stationary target is easiest to aim at. 静止的目标是最容易瞄准的。
- He shot an arrow, but it fell short of the target. 他射了一箭，但没有射中靶。
- Angular forms, outlines, or corners. 角形角形，角的轮廓或棱角
- He won't hit the target at that distance. 他打不中那样远的目标的。
