visual examination 外观检查 ; 目检 ; 目视检查 ; 表观检查
visual examination of weld 焊缝外观检查
visual examination of structural member 构件外观检查
visual examination of coating 外观质量
direct visual examination 直接观测检验
External visual examination 外观检验 ; 目视检验
Visual examination of surface discontinuities 表面不连续性的目测
steric visual examination 立体视觉检查
X-ray examination of thin slabs of rock sometimes reveals the ghostly outlines of tentacles, digestive tracts, and visual organs of a variety of marine creatures.
对岩石薄片的 X 射线检查有时会发现可怕的触角轮廓、消化道和很多种海洋生物的视觉器官。
If the test piece fails to comply with any of the requirements for visual examination or NDT specified in 7.5, one further test piece shall be welded and subjected to the same examination.
如果试件不符合7.5规定的外观检查或非破坏性检查的要求，应再取一个试件进行焊接，并进行同样检查。
By using visual examination, scanning electronic microscope, X-ray energy spectrum and metallurgy and chemical analysis, the cause of crack occurred in bellow expansion joint was analyzed.
采用宏观检查、扫描电镜、X射线能谱、金相分析及化学分析等方法，对金属波纹膨胀节开裂的原因进行了分析。
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