The theory and method of ultrasonic inspection signal coupling have filled the country blank.
在超声波探伤信号耦合的理论和方法上，填补了国内空白。
The NC machining of hydraulic turbine blades is discussed with emphasis on blank margin control, marking inspection of blades, setting-up of blades, and machining and trimming of blades.
阐述了水轮机叶片数控加工工艺的技术方法，重点对毛坯余量控制、叶片划检、叶片装夹、叶片加工及叶片修磨等工艺环节进行了分析研究。
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