👉 In the context of mechanical engineering, underplate refers to a portion or part of a plate that is below the surface and therefore not visible from the surface. This can be used as a reference or concept in the design process for understanding how components fit together and their relationship with each other. For example, in a structure made of metal plates, underplate might refer to the area inside a plate where there are no external connections (e.g., wires, cables) that could interfere with the movement or
