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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The third group, which acted as a second type of control, were released without any marking.

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The U.S. had been scheduled to hold a ceremony marking the transfer of control two weeks ago, during Hagel's first visit to Afghanistan as defense secretary.

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Still, the FDA decision moving the pill from behind the counter to drugstore shelves reflected a societal shift in the long battle over women's reproductive rights, marking a major milestone for those who believe all forms of birth control should be easy to buy.

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