... high-frequency current 高频电流 high-frequency drilling 高频冲击钻进 high-frequency induction 高频感应 ...
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high frequency drilling 高频冲魂眼
high-frequency drilling 高频冲击钻进 ; [矿业] 高频凿岩
variable frequency drilling rig 变频钻机
AC variable frequency drilling rig 交流变频钻机
low frequency vibration drilling 低频振动钻削
low frequency vibratory drilling 低频振动钻削
variable-frequency drive drilling rig 变频电动钻机
By drilling down to the column statistics in the table descriptor, you can discover that the six elements in the in list predicate happen to be the bottom six values in the frequency statistics.
通过深入在表描述符上的列统计信息，您可以发现在IN清单上的6个元素恰好是频率统计信息上的最后6个值。
All of these provide a reference date for the applications of vibration drilling with low frequency torsional vibration.
为低频扭振型的振动切削应用于生产实践提供了参考数据。
The article introduced methods of drilling shaker dynamic measurement based on IVC, taking damping coefficient, natural frequency and vibration model as examples.
并以振动筛阻尼系数、固有频率和振型为例，介绍了基于智能控件化虚拟仪器技术的钻井振动筛动态特性检测方法。
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