您要查找的是不是：
- 焦点外X线off-focus x-ray radiation
- 口外X线胶片extraoral film
- 外outside
- 在线in-line
- 焦点外像out-of-focus image
- 口外X线照相术extraoral radiography
- 焦点外物距extrafoveal object distance
- 焦点外像距extrafocal image distance
- 侧面口外X线摄影profile extra oral radiography
- 焦点外辐射extra-focal radiation
- X线人类学roentgenographic anthropology
- 太阳外X射线源extrasolar X-ray source
- 透X线Pass through X - ray
- 在焦点外;模糊不清的out of focus; unclear
- X线两档Two X-ray energy modes
- X线系统X- ray system
- X线检测X-ray detection
- 华特口外X线检查Waters extraoral radiographic examination
- X线引导X-ray guided
- X线分型X-ray subtype
