光胶垫板技术条件的给定，直接影响到光胶垫板的使用性能和加工效率。
Specification of optical backing plate technical condition directly affects its performance and machining efficiency.
球头立铣刀的应用越来越广泛，其质量好坏直接影响到加工对象的表面质量、精度及加工效率。
Ball End milling cutter is widely used in industry. The quality of the cutter directly decides the milling surface's roughness, accuracy and efficiency of the milling process.
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