abrasive jet wear testiong的用法和样例：
- abrasive jet wear testing
- The presence of striation area is one of the main characteristic on the surface generated by abrasive jet.
- Abrasive jet by collimating tube is a sort of posterior mixing abrasive jet, which is applied usually in cutting field and rarely in cleaning and descaling.
- The paper attaches much importance to the numerical control system of the premixed abrasive jet and discusses the overall project in the numerical control system in detail.