Similar words: drilling, drilling rig, drilling mud, drilling pipe, offshore drilling, drilling platform, drill in, drill instructor. Meaning: n. a bit used in drilling for oil.
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31 Using this model, using pattern recognition method can be carried out on the work area of other pending drilling bit selection, to improve the drilling rate when drilling to reduce drilling risk.
32 A new method which is used to promote the reaming quality with a new blade-like drilling bit is presented. The working principle is also involved.
More similar words: drilling, drilling rig, drilling mud, drilling pipe, offshore drilling, drilling platform, drill in, drill instructor, trilling, frilling, grilling, shrilling, thrilling, drill bit, recycling bin, quadrillion, trillin, long bill, spelling bee, spelling book, polling booth, travelling bag, milling, tilling, willing, billing, killing, filling, flying bird, wading bird.