香蕉视频黄污下载_激情婷婷五月天_亚州无码五月天_激情文学另类人妻卡通动漫_美女午夜福利视频网址_免费A级毛片无码AV蜜芽18禁_一区二区免费视频少妇_俄罗斯老熟女18一HD_综合另类亚洲欧美一区_中文字幕99久久亚洲精品

Type E probe is also called cross yoke probe, it can detect the flaws from all around, equips with scroll wheel and working light, Alternating current phase shift technique produces rotating magnetic field, can display the cracks from two directions simultaneously.