effective focal spot meaning in English

有效焦点

Measurement of the effective focal spot size for industrial x - ray apparatus
工业用x光射线仪有效焦点尺寸的测量
Non - destructive testing - characteristics of focal spots in industrial x - ray systems for use in non - destructive testing - measurement of the effective focal spot size of mini and micro focus x - ray tubes
无损检验.无损检验用工业x射线系统的焦点特性.小型和微型聚焦x射线管有效焦点尺寸测量
Non - destructive testing . characteristics of focal spots in industrial x - ray systems for use in non - destructive testing . part 5 : measurement of the effective focal spot size of mini and micro focus x - ray tubes
无损检验.无损检验用工业x射线系统中焦点的特性.第5部分:最小和最大聚焦x射线电子管的有效焦点尺寸的测量