跨树保护线
The ultrasonic testing methods for blades with fork root, blades with fir-tree root, the transition zone from blade to root, blade body, lacing wire, and shroud band in heavy-duty steam turbine have been presented.
介绍了大功率汽轮机叉型叶根叶片、枞树型叶根叶片、叶身和叶根过渡区、拉筋、围带的检测方法。
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