Bionic design to nature everything shape, color, tone, function, structure and so on as the research object, selectively apply these characteristic principles in the design process, combined with bionic research results, to provide new ideas, new ideas, new methods and new ways for design, in which structural bionic design of the main graduate objects and natural matter exist in the internal structure principles in the design of the application of the problem, suitable for product design and architectural design.
According to the above definition, which of the following options is a structural bionic design?
The designer invented the submarine according to the principle of fish action