Say you increase the size of Earth, so Earth's gravitational constant increases.

假设你增加了地球的大小，那么地球的引力常数就会增加。

Here is the equation for the radius of a non-rotating black hole, which gives a  simple relationship with its mass where G is the gravitational constant and c is  the speed of light.

这是非旋转黑洞半径的方程，它与其质量有一个简单的关系， 其中 G 是引力常数， c 是光速。

If you measured the deflection accurately and worked out the mass of the mountain, you could calculate the universal gravitational constant that is, the basic value of gravity, known as G and along with it the mass of the Earth.

要是你精确测量那个偏差，计算大山的质量，你可以算出万有引力的常数即引力的基本值，叫做G同时还可以算出地球的质量。