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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Android widened its margin to control a whopping 69.7 percent share of the smartphone OS market compared to 20.9 percent for iOS, a bump of 87.8 percent over the quarter.

ENGADGET

Product rationalization and operational efficiencies are helping cost control and margin expansion at Rovi.

FORBES: Rovi Shares Now Streaming In The Right Direction

On the margin--the margin that gave the Democrats control of the House and Senate--the vote winners were slow-growth independent populists.

FORBES: Populism, Age and the Nostalgia Trap