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- This paper introduces research and development of DH pneumatic perforating machine, hydraulic percussion hammer and trajectory -controlled pneumatic perforating machine and their application. 非开挖技术在国际发展迅速,在我国尚有差距,本文介绍我国DH气动穿孔机、液压冲击锤、轨迹可控气动穿孔机的研制及工程应用情况。
- percussion hammer firing mechanism 击针锤击发装置
- A very nice set of glasses came under the hammer yesterday. 昨天拍卖了一套很精致的玻璃杯。
- The teacher has been trying to hammer in the facts. 教师一直设法把这些事实灌输给学生。
- A similar board used as a percussion instrument. 敲击板用作打击乐器的一种类似的板
- The mason was chipping away at the rock with a hammer. 石匠用锤子一点一点地把那块石头击碎。
- The hammer is missing from my toolbox. 我的工具箱里少了一把锤子。
- A hammer is used for driving in nails. 子是用来钉钉子的。
- Why do you hammer at the subject day after day? 你为何日复一日地钻研那个科目?
- The handle of the hammer came away easily. 这锤柄很容易脱落。
- Sarcasm became a sledge hammer in their debate. 在他们的辩论中,讽刺成为强有力的武器。
- He scarred the door with a hammer. 他用锤子将门敲得疤痕累累。
- He hit the nail into the wall with a hammer. 他用一把锤子把钉子打进墙里去。
- I want to hammer in a few facts if I can. 要是能够的话,我要反复强调几个事实。
- Percussion instruments or their players considered as a group. 把打击乐器或他们的演奏者看成一组
- He was chipping away at the rock with a hammer. 他用锤子一点一点地击碎那块石头。
- The hammer is missing from my tool-box. 我的工具箱里少了一把锤子。
- Legislation to phase out the use of noisy percussive hammers (including diesel, steam and pneumatic hammers) in built-up areas was enacted in May 1997 for implementation early in 1998. 在楼宇林立地区逐步取缔高噪音撞击式打桩机(包括柴油、蒸气及气动打桩机)的法例,已在一九九七年五月制定,将于一九九八年初实施。
- She smashed the hammer down onto the box. 她用锤子猛击箱子。
- All of us cried when our house went under the hammer. 我家的房子被卖掉了,我们全哭了。