The used ultrasonic testing method is only limited to A-scope pulse-echomethod.
所用的超声探伤方法仅限于八型显示脉冲反射法。
2
It is effective and practical to use ultrasonic pulse-echomethod for insulation condition diagnosis of generator stator bars.
超声反射法是一种有效的、实用的大电机主绝缘状态诊断方法。
3
Explain the characteristics of piezoelectric crystals and the factors relating to the resonant frequencies of a piezoelectric crystal, and the procedure of the pulse-echomethod.