内球面加工
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working the inner sphere
处理内部球体
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The adoption of the tool in the structure for working inner sphere is easy in manufacture, working as well as radius adjustment, and high in working accuracy.
采用此种结构的刀具加工内球面，易于制做、加工半径易于调整、加工精度高。
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