The problem of extracting drilling tool wears character signal is studied.
研究了钻削过程中刀具磨损特征信号的提取。
Right at twenty past two Mr. Harrison ordered a drilling tool-pusher to start examining the blowout preventer.
正好在两点二十分哈理森先生命令钻井技师检查防喷器。
Mechanical design of stabilized platform unit is one of the key techniques in the rotary steering drilling tool.
稳定平台单元机械系统的设计是旋转导向钻井工具的关键和难点之一。
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