Fluorescent magnetic testing

• 荧光磁粉检测

Fluorescent magnetic testing的用法和样例：

例句

1. All attachment areas in ferromagnetic materials shall be examined by the magnetic particle technique, if this is not possible by liquid penetrant methods.
   铁磁体材料上所有粘附表面，若不能作渗透检测，可采用磁粉检测方法。