duplex wire meaning in Chinese

双工导线
双心导线

Non - destructive testing - image quality of radiographs - image quality indicators duplex wire type , determination of image unsharpness value
无损检验.射线照相的图象质量.图象质量显示器
. non - destructive testing . image quality of radiographs . part 5 : image quality indicators duplex wire type , determination of image unsharpness value
无损检测.射线照相的成象质量.第5部分:成象质量指示器
Non - destructive testing - image quality of radiographs - part 5 : image quality of indicators duplex wire type , determination of image unsharpness value ; german version en 462 - 5 : 1996
无损检测.透视照片质量.第5部分:双丝型指示器图像质