铤 [
dìng]
copper or iron ore
(run) quickly
- 不答应把戴着安全卡瓦的钻铤立柱或其他管具竖到井架上。
Do not leave clamp on stand of drill collars or other pipe racked in mast/ derrick. - 钻杆和钻铤等管状螺纹连接件,是钻探和石油钻井工业中的关键设备。
In drilling exploration and well drilling Industry, the drilling pipe and drill collar are key apparatus. - 该总合力包括钻柱在空气中的重量、钻铤和其它任何辅助设备的重量,任何易于降低这些设备重量的力都会使大钩载荷减小。
This total force includes the weight of the drill string in air, the drill collars and any ancillary equipment, reduced by any force that tends to reduce that weight.