该术语通常是指钢的小碎片，如手工具、小零件、钻头喷嘴等，也可能是指钻头碎片或其它井下工具的碎片，以及磨铣作业所产生的残留物等。
The term is usually reserved for small pieces of steel such as hand tools, small parts, bit nozzles, pieces of bits or other downhole tools, and remnants of milling operations.
分析了小直径深孔振动钻削对钻头的要求；设计了一种新型内排屑深孔钻头；分析了该钻头的结构和刃磨特点，进行了振动钻削试验。
Based on analyzing the demands of small-diameter deep-hole drill for vibration drilling, a new inner-chip removal drill was designed.
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