Using a ball end mill to form part of the combustion chamber.

用球头铣刀的组成部分燃烧室。

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It has an important value for forecasting milling force for the ball end mill and offers a reference for further improving surface machining quality.

切削力模型的建立对实现球头铣刀切削力的预报具有重要的现实意义，并为进一步提高表面加工质量奠定了基础。

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A manufacturing model for the ball end cutter is presented, and the feasibility of grinding ball end cutters of different sizes using the same mechanism is discussed.

文中给出球面铣刀的制造模型，探讨了运用同一机构磨制邻近规格的不同球面铣刀的可行性问题。

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And they are extremely proud of what they're doing. But all of us volunteers,workforce, everybody involved has to keep their eye on the ball, work hard right to the end.

VOA: standard.2010.02.21

Have I found you Flightless bird Grounded Bleeding or lost you American mouth (SINGING) How come I end up where I started How come I end up where I went wrong Won't take my eyes off the ball again You reel me out then you cut the string How come I end up where I started How come I end up where I went wrong Won't take my eyes off the ball again First you reel me outand then you cut the string You used to be all right What happened?

VOA: standard.other

The last four wickets went down for three runs with van Jaarsveld bowling last man Joe Grant first ball to end the contest.

BBC: SPORT | Cricket | Counties | Brown seals Northants win

Sony came up with a remote with a lighted ball at the end that no one can build anything for.

FORBES: What Does Sony Need To Do To Be Successful With Its Upcoming PS4?

The 24-year-old fell awkwardly jumping for a high ball near the end of the game and had to be stretchered off.

BBC: Sowden-Taylor grimaces as his ankle is caught beneath him