The developing steps of simulation test software, test interface and flow chart of its applying procedure are introduced through an example of pneumatic supplies selecting device.

A model plane, model of mechanical: car, model ship models, the building model, military, model train, railway, animal model and simulation model, die-casting and metal toys;

A simulation system for studying the electrical properties of mammalian myelinated nerve fibers was built based on a simple infinite and homogeneous volume conductor model.