The two hulls are manufactured from boilerplate steel, whose relative density is 7.8 times that of water.

这两层船壳是用钢板制造的，钢的密度与海水密度的比例是十比七至八。

Be that as it may, Captain Nemo also introduced me to the different data he had obtained on the relative densities of the water in our globe's chief seas.

不管怎样，船长同样又让我知道他所获得的各种数字。这些数字是关于地球上主要海洋海水密度的报告。