是第二次机械化加工，在顶端加工后，再将紧固件坯料钉端切削。
Pointing . Pointing is a secondary machining operation consisting of adding points on fastener blanks which were not pointed during the heading operation .
这个二次操作使如此制造的微机械加工的传声器增加了复杂性和成本。
This secondary operation adds complexity and cost to the micromachined microphones so fabricated.
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