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Chapter 742 Submarine continued
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Chapter 743 Submarine continued
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... tless pump can also be tested on ordinary civilian ships. However, since there are already designed small submarines, why not just test them in one step?
The first luxury submarine being developed is actually not large, the length is 20 meters, the diameter is up to four or five meters, the displacement is 200 tons, and the underwater displacement is only a small submarine of three or four hundred tons. The difficulty is very low.
If you really want to say that the demand is high, ...
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