您要查找的是不是：
- 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。
- Diamond drilling replaced percussion drilling. 金钻探取代了冲击钻探。
- This paper explains and proves briefly that the incident wave differes from the percussive force in percussive drilling, and both are two different conceptions. 本文简要地论证和说明了冲击凿入系统中的入射波和凿入力(即冲击力)是两个不同的力。
- This paper introduces the automatic drilling principle, the hardware composition and software program in the windlass percussive drilling by the microcomputer control system. 介绍了卷扬式冲击钻进过程中，微机控制实现自动钻进的基本原理、硬件的组成和软件的设计。
- Based on certain mechanical quality of the rock, the analysis on the Polycrystalline Diamond Compacts (PDC) bit and the rotary percussive drilling is carried out. 在管棚支护所钻岩石的力学性质基础上,对管棚支护钻孔所采用PDC钻头和回转冲击的钻进方式进行了比较分析。
- GCF-20A Reverse Circulation Percussive Drilling Rig GCF-20A型冲击-回转反循环工程钻机
- vibrating and percussive drilling 振动冲击钻进
- rotating and percussive drilling 旋冲钻井
- Keywords impact;wave mechanics;hydraulic percussive drill;design; 冲击;波动力学;液压凿岩机;设计;
- The floor that stands by a floor in strong bottom digs a hole with percussion drill, knock nog, get on the traditional thread binding that play a base, secure with nail. 在强下部靠近地板的地板用冲击钻打一排孔，敲入木钉，把踢脚线装上，用钉子固定。
- The drilling troops mustered on the hill. 演习部队在小山上集合起来了。
- Research on Rock-Crushing Mechanics Model in Rotary and Percussive Drilling 旋冲钻井破岩力学模型的研究
- Realization of automatic percussive drilling by microcomputer control system 微机控制自动冲击钻进的实现
- The air foam clockwise circulating and percussion drilling technology was practiced in the Africa that lacks water.It also got over the problem to drill in the very hard and leakage water rock. 应用空气泡沫正循环、气动潜孔锤钻进技术,实现了在非洲大陆严重缺水地区施工,克服了对坚硬岩石和漏失层钻进困难的问题。
- The workman is drilling in the wall. 工人正在墙上打孔。
- Drilling is cutting a hole with a drill. 钻削就是用钻头钻一个孔。
- At six we were fallen in for drill. 六点钟我们站好队准备操练。
- The noise of the drilling is intolerable. 钻孔的噪音让人受不了。
- Complete range of various capacities, suitable for professional use on portable and percussion drills. 拥有可涵盖各种夹持力之完整性，适用于可携式电钻之专业用途。
- The sound of that drill jangles horribly on the nerves. 那台钻机的声音响极了，十分刺耳。
- 今日热词
-
- 深远海浮式风电平台 - deep-sea floating wind power platform
-
- 京雄高速公路 - Beijing-Xiongan expressway
-
- 农业及相关产业增加值 - the added value of agriculture and related industries
