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- 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。
- 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。
- 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。
- SR360 rotary drilling when drilling play in the construction of the largest pebbles are more than 50 cm, geological strength 1200 kPa. SR360旋挖钻在施工时打出的最大的卵石有50多公分，地质强度达到1200千帕。
- The paper introduced the use of airlifting reverse circulation rotary drilling techniques in practice of major diameter socket pile operation at Xiangfan city s Hanjiang No. 介绍了使用泥浆护壁气举反循环回转钻进工艺进行襄樊汉江四桥大口径嵌岩桩的施工实践。
- Researches indicate that the new type of DTH hammer without drilling machine can make DTH hammer achieve percussive and rotary drilling using air compressor. 借鉴凿岩机的转钎机构,利用活塞的回程能量带动钻头旋转。
- At six we were fallen in for drill. 六点钟我们站好队准备操练。
- Based on analysis of application prospects of rotary drilling in petroleum drilling, this paper presents the structure and working principle of the new hydraulic kicker. 在分析了冲击旋转钻井技术在石油钻井中的应用前景的基础上，介绍了新型液动冲击器结构及工作原理；
- The sound of that drill jangles horribly on the nerves. 那台钻机的声音响极了，十分刺耳。
- You'd better set a goal before you start the drill. 练习开始前，你最好设定一个目标。
