After 10 billion years of cooling, large gas giants are all very nearly Jupiter's radius, but more massive objects are slightly smaller.
在冷却了一百亿年后，大型气态巨行星的半径将非常近似于木星，但质量越高，半径却会略微缩小。
The uncertainty of this radius is, of course, not very large but we are not certain about the radius to about one centimeter, so it's 85 plus or minus one centimeters.
半径的不确定性是，当然不是很大,但是我们不能把半径,确定到1厘米范围内，因此是85加减,1厘米。
We can only speculate at the core composition of mercury, but it has a very high density for its radius so it is likely to have a large metallic core accounting for most of its mass.
我们只能推测在汞的核心成分，但它有它的半径密度非常高，所以很可能有一个大的金属的群众最核心的会计。
应用推荐