annular bit
英 [ˈænjələ(r) bɪt]
美 [ˈænjələr bɪt]
环孔锥；环形钻头, 轮钻
双语例句
- An annular drilling bit to allow core samples to be taken.
用来获取采样的一种环形钻头。 - An annular drilling bit to allow core samples to be taken. Wire-line Core Drilling in Water Sensitive Formations
用来获取采样的一种环形钻头。绳索取心钻进技术在水敏层中的应用 - Traditional methods used to determine the change of the annular pressure through measuring static bottom hole pressure using sensor near the bit do not work well for this purpose because of its high cost and high failure in hole.
在钻头附近安装环空压力传感器，能够精确测量环空压力，但成本高，故障率高，大范围的应用受到限制。