Finally, the factors affecting TOFD sizing accuracy are analyzed.
最后，对影响TOFD测量精度的因素进行了分析。
Pressure equipment; Ultrasonic inspection; TOFD technique; Procedure requirements; Acceptance criteria.
承压设备；超声检测；TOFD；程序要求；验收标准。
Ultrasonic time-of-flight diffraction (TOFD) technique is a new successful one for detecting and sizing the discontinuities in welded joints.
超声衍射时差(tofd)法是焊缝超声检测和缺陷定量很有发展前景的新技术。
The bidder shall have the qualification of NDE testing issued by the administrative department and must include the project of TOFD ultrasonic testing.
投标人须具有行政主管部门颁发的无损检测资质且必须包含TOFD超声检测项目。
Time of flight diffraction (TOFD) was summarized as a new nondestructive testing method. The present seven main TOFD standards in the world were evaluated and compared in twelve different portions.
概述了超声波衍射时差法(TOFD)，对目前世界上主要的七个TOFD检测标准或规范进行了分析和比较，归纳了其中十二个方面的异同点。
Time of flight diffraction (TOFD) was summarized as a new nondestructive testing method. The present seven main TOFD standards in the world were evaluated and compared in twelve different portions.
概述了超声波衍射时差法(TOFD)，对目前世界上主要的七个TOFD检测标准或规范进行了分析和比较，归纳了其中十二个方面的异同点。
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