Conduct operation including sampling, mounting, polishing, etching, microscope inspection, hardness testing, NDT testing (magnaflux particles, ultrasonic etc).

协助工行材料测试,报告以及分析.

This paper introduces promiseful applications of a new wave type so called ultra sonic creeping wave in NDT.

本文介绍超声无损检测中一种具有较好应用波型──超声爬波。