That means it was fabricated by welding steel plates together.

这意味着它是通过将钢板焊接在一起制成的。

Such an object, which aims to trap sound the way cosmological black holes trap light, can be built by welding steel beams that taper to a thin point to the inside of the ship's hull.

这样一个物体旨在像宇宙学黑洞捕获光线一样捕获声音，可以通过焊接钢梁来建造， 这些钢梁逐渐变细， 直到船体内部的一个细点。