... 定位装置 locating device 定位钻 spotting drill 定向控制阀 directional control valve ...
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... 定位 spotting 定心钻 spotting drill 定心刀具 spotting tool ...
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Hsse Spotting Drill 点钻
drill-entry spotting accuracy 钻入定心精度
·2,447,543篇论文数据，部分数据来源于NoteExpress
It is shown that vibration drilling entirely changes drill-entry mechanism of common drilling, remarkably improves drill-entry spotting accuracy.
分析结果表明，振动钻削改变了普通钻削的钻入机理，显著提高了钻入定心精度，特别适合微小孔的精密和超精密加工。
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