blocking hammer造句

Hydraulic pile hammer is one of the pile driving machines that drive prefabricated piles into the ground in the construction of pile foundation such as construction , bridge , dock , etc . with the development of science and technology , the prefabricated pile driving machines evolve from block hammer , steam - hammer , diesel hammer to hydraulic hammer . hydraulic pile hammer is one of ideal prefabricated pile driving machines because it can adjust stress waveform , decrease stress peak value , prolong effectual action when it drives piles . hydraulic pile hammer is used widely and formed series in developed countries now
液压打桩锤是用于建筑、桥梁、码头等桩基础施工中打入预制桩的桩工机械。随着科学技术的进步，预制桩施工机械由落锤、汽锤、柴油锤，发展到了液压打桩锤。用液压打桩锤打桩，可以调整撞击应力波波形，减小应力峰值，延长有效作用时间，是一种比较理想的预制桩施工机械，目前在发达国家已被广泛使用，并形成了系列化。
It's difficult to find blocking hammer in a sentence. 用blocking hammer造句挺难的