英语词汇spot drill怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	spot drill
释义	spot drill 简明释义点钻网络释义 1 [机]?定位钻 ... 定位装置 locating device 定位钻 spotting drill 定向控制阀 directional control valve ... 2 ?定心钻 ... 定位 spotting 定心钻 spotting drill 定心刀具 spotting tool ... 短语 1 Hsse Spotting Drill 点钻 2 drill-entry spotting accuracy 钻入定心精度双语例句 1 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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