The meaning of standard content is to standardize and strictly define the specific parameters, functions and styles of a service or product. It can also be called standard unit, which probably means to define a product with specified parameters and styles, so that this product has standardization and consistency in production, processing, maintenance, supply and other links. The standard equipment we usually hear refers to the same series of weapons that have been approved and filed by the relevant military departments, agreed to mass production and procurement, and can be formally installed in the army, with official models, technical parameters and standard styles.