Warning: file_put_contents(/www/wwwroot/ppbbu/www.30232.com/cache/891c04f95b7246f31b3ceb6e3964202e.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/www.30232.com/index.php on line 55 nondestructive testing英英字典_nondestructive testing剑桥英语解释_nondestructive testing柯林斯英文解释_绍翊字体网有道词典
1. N any of several methods of detecting flaws in metals without causing damage. The most common techniques involve the use of X-rays, gamma rays, and ultrasonic vibrations 非破坏性试验 ( abbr: NDT)