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Chapter 557 039's first boat
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... he dock over there, and said to Qin Tao.
"Although we are talking about a new generation of submarines, the design is not very bold, and there are still many design flaws." Qin Tao echoed: "Although I don't have specific data, I always feel that its seven-leaf side The design of the pitched propeller is questionable."
In fact, even without Qin Tao's crossing, many domestic technologies are still developing, and the special multi-axis CNC milling machine for processing submarines ha ...
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