Warning: file_put_contents(): Only 0 of 6215 bytes written, possibly out of free disk space in /home/www/wwwroot/zidian/001308.com/index.php on line 55 ultrasonic testing英英字典_ultrasonic testing剑桥英语解释_ultrasonic testing柯林斯英文解释_零食美味英文词典
1. N the scanning of material with an ultrasonic beam, during which reflections from faults in the material can be detected: a powerful nondestructive test method 超聲波檢測[engineering]