The original subtended angle is the subtended angle of the unaided eye – the angle between the center of the objective lens and the height of the real image.

原对角是肉眼的对角——物镜中心与实像高度的夹角。

And the newly subtended angle is the amount that the object subtends when viewed through the eyepiece – the angle between your eye and the rays from the eyepiece.

新的对向角是通过目镜观察物体时的对向量——你的眼睛与目镜发出的光线之间的角度。

We have the magnification equation, expressed in terms of subtended angles, but we can still use the equations in terms of distance and height for both objects and images.

我们有放大方程， 用对角表示，但我们仍然可以使用物体和图像的距离和高度方程。

An object is said to subtend a certain angle of your vision based on how close you are to it, and how big it is.

根据您 与它的接近程度以及它的大小，据说一个物体对着您的视野的某个角度。

For example, if you’re looking up at the moon, and you cover it with your thumb, then your thumb and the moon are both subtending the same angle to your eye, which we measure in degrees.

例如，如果您正在抬头看月亮，并用拇指遮住它，那么您的拇指和月亮都会与您的眼睛形成相同的角度，我们以度为单位进行测量。

For example, if you're looking up at the moon, and you cover it with your thumb, then your thumb and the moon are both subtending the same angle to your eye, which we measure in degrees.

例如，如果你抬头看着月亮，然后用拇指遮住它，那么你的拇指和月亮都对着你的眼睛，我们用度数来衡量这个角度。