Aiming at the rapid design issues of NC programming for variant part, a rapid NC programming method, which is based on the master NC programming template of master part model, was researched.

Because checked exceptions are part of a method's signature, you can't add one to an overriding variant any more than you can change its return type.

Although the filtering method in frequency domain can solve the time variant filtering problem based on Fourier transform, the method may appear a false anomaly in conjunct part between Windows.