大尺寸井眼就需要双泵。
The drill hole size selected should provide sufficient representative sample material for analysis and reference.
该钻孔尺寸选定应提供足够有代表性的样本，剖析材料和参考。
A twist drill is designed to drill a hole which has a particular size.
麻花钻用来钻削具有一定尺寸的孔。
The drill file describes the location and size of each drilled hole.
这个钻头的位置和大小的文件描述每个钻孔。
Orthopedic drill tool can be served according to the specific drawing size or sample.
骨科类钻头，工具可以按客户提供的尺寸图、或者样品生产。
Thus the size and quality of PCB drill is demanding increasingly.
从而对钻pcb的钻头尺寸与质量的要求也越来越高。
Thus the size and quality of PCB drill is demanding increasingly.
从而对钻pcb的钻头尺寸与质量的要求也越来越高。
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