Do the structural parts in the patent need technical features?

The claims only need to explain the structure. Of course, if it is a method invention, it is necessary to specify the method (including control methods, etc.). ), but the operation steps need not be written. The operation steps, like the working principle, are all caused by the product structure. With a specific structure, the process or steps that must be taken to achieve a certain beneficial effect belong to the working principle and cannot be counted as a method, so there is no need to write the claim, but it must always be clearly written in the specification for the technicians to understand.