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- rotary drill line 钻井钢丝绳
- The mast assem-bly supports the rotary drill head and its hoisting mechanism. 支架组件支持转动钻头及其提升机构。
- Reel and release drill line, change direction of changing valve position can be changed the direction of motion. 收绳和放绳,改变手动换向阀的位置即可改变运转方向。
- Do we need to slip the drilling line very often? 我们需要经常滑大绳吗?
- Slip 6 meters of the drilling line. 滑移钻井大绳6米。
- Slip and cut off the drilling line, please! 请倒大绳!
- Cut off 45 meters of the drilling line. 切割大绳45米。
- a rotary drill, clothes drier, switch, etc 旋转式钻机﹑ 乾衣机﹑ 开关等
- Rotary drill rod used for coal mining roofbolter 煤矿锚杆钻机用回转钻杆
- Brief Introduction for Application of Rotary Drill 旋挖钻施工简介
- Specification for Rotary Drill Stem Elements 旋转钻柱规范
- Research on the small-Bore Drill of Rotary Drill 关于粘土层使用小口径旋挖钻机的探讨
- The LB 28 large rotary drilling rig is an ideal complement to the LRB combined piling and drilling rigs. LB28大型旋转钻机是LRB组合打桩和钻孔机器的理想补充。
- In order to avoid the pollution caused by slurry around bridge-building sites, they use dry-boring by rotary drills where possible. 桥梁施工中为减少泥浆对桥位处的环境污染,尽量采用旋转钻机干法成孔。
- With expert chassis of Rotary drilling rig and strong box type mast, it has high working stability. 应用徐工成熟技术制造的旋挖钻机底盘,结实的箱型臂架,具有超强稳定性;
- The forming mechanism of the bias force is the key to the study of the modulated steerable rotary drilling system. 导向力的形成机理是研制旋转导向工具的核心。
- The fixed set of pulleys (called sheaves) located at the top of the derrick or mast, over which the drilling line is threaded. 位于重型井架或桅架式井架顶部的固定的滑轮组(称之为滑车轮槽轮),通过该滑轮组钻井钢丝绳进行穿绳。
- In order to avoid the pollution caused by slurry around bridge-building sites,they use dry-boring by rotary drills where possible. 桥梁施工中为减少泥浆对桥位处的环境污染,尽量采用旋转钻机干法成孔。
- In modern rotary drilling, especially formulated mud is used in the well to keep the reservoir fluids in place, among other functions. 在现代旋转钻探作业中,经特殊配制的泥浆的功用之一就是使油井中储集层流体保持在原位不动。
- However, the SEP in diamond rotary drilling was higher than the SEP in percussive drilling in lightly weathered hard as well as in extremely hard rock. 在微风化的坚硬与极坚硬岩石中,金刚石旋转钻进比功则明显高于冲击凿碎比功。