The size and number of steel wheel lug's holes, formed within the same distance, reflect directly its motion resistance when rolling in paddy field.

水田铁轮在水田中滚动时，在相同区段上所形成的刺孔的大小与多少直接影响共滚动阻力的大小。

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The promoted design of the rolling tool used in precisely machining deep holes with an effective multiplex boring machine is introduced.

介绍了高精度深孔加工用高效复合镗滚压工具的改进设计。

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Bickerton had been eight under after two rounds but parred his first six holes before rolling in a 12-footer for his first birdie of the day on the seventh.

BBC: English pair share lead in Perth

Neither company is rolling over now: Before Tysabri was even approved, Serono chief Ernesto Bertarelli made the rounds to poke holes in the drug's hype.

FORBES: Biogen Idec Hits A Nerve