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The drill is strong enough to bore through solid rock.
这把钻足以钻透坚固的岩石。
《牛津词典》
Common round steel or steel tube may be rolled into solid or hollow twist drill rods by using the said rolling mill.
普通元钢或普通钢管经此轧机后，可直接变成实心或空心麻花钻杆钢。
youdao
That could have been a solid steel joint between two sections of drill pipe.
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