main mirror meaning in Chinese

主反射镜

The pictures it sent us were very disappointing because its main mirror was faulty
它传送给我们的图像很令人失望，因为它的主要镜子有误差。
As long as the pointing error is no more than 1 or 2 percent of the main mirror ' s diameter , it makes no visible difference
只要误差在主镜直径的百分之一或二以内，目视是觉察不到的。
Thus , a telescope with larger collecting area , which usually means larger main mirror or lens , is more powerful . this is the main reason why we prefer large telescopes . large telescopes also improve the
由于望远镜主镜口径越大，便意味著它的集光能力越强，即它的能力亦越强，难怪天文学家都是以大为美的家伙。
Like the primary mirror , the eyepiece has an optical axis , and this axis should be aimed at the center of the main mirror for best performance ? though in practice it is the center axis of the focuser drawtube that you aim at the primary mirror
目镜和主镜一样也有光轴，光轴应该对准主镜的中心? ?尽管实际上，目镜的光轴对准的是调焦筒（相当于调焦座）的中心。