grinding balls
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提出了一些延长磨球使用寿命的措施。
At last some measures of prolonging ball life were raised.
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若采用余热淬火可大大降低磨球的成本。
By adopting immediate quenching, the production cost will be reduced greatly.
本文研究了计算机在磨球铸造工艺设计中的应用。
The paper deals with application of Compter in ball technology design.
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