近表面缺陷 meaning in English

near surface defect
near surface flaw
near surface flow
nearsurfacedefect

The alternating current in the alternating current magnetic field leakage testing ( ac - mfl ) is one of the magnetizing manners . the sensitivity is very high to the defect of surface and the near to the surface of the workpiece . it is one of the developing directions of nondestructive testing ( ndt ) domain
交变漏磁检测技术中的交变是漏磁检测技术中的一种磁化方式,该技术对工件表面及近表面缺陷具有较高的检测灵敏度,是无损检测领域未来主要发展方向之一。
Liquid penetrant testing , eddy current testing and magnetic particle testing are mainly used in the detection of surface flaws and near - surface flaws , radiographic testing and ultrasonic testing are mainly used in the detection of inner defects , ultrasonic testing is also used in the detection of spheroidization quality of smooth surface castings , while vibration testing is used in the detection of spheroidization quality of rough surface castings
液体渗透检测、涡流检测和磁粉检测常用于检测铸件表面和近表面缺陷，射线检测和超声检测常用于检测铸件内部缺陷，超声检测可用于表面光洁铸件的球化质量的检测，振动检测则用于表面粗糙铸件的球化质量的检测。