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Chapter 626 The upcoming 093 submarine
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... e used so that it can withstand the extrusion of strong water pressure and avoid being crushed underwater.
However, this is only the first step. With suitable high-strength steel, it may not be possible to make a submarine, because the steel plate produced by the steel factory is flat, and the steel plate required by the submarine is curled.
The pressure hull of a submarine is similar to a boiler. It is a pressure vessel. As long as you have basic knowledge of engineering mechani ...
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