例句與造句

1. 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
   液壓打樁錘是用于建筑、橋梁、碼頭等樁基礎(chǔ)施工中打入預(yù)制樁的樁工機(jī)械。隨著科學(xué)技術(shù)的進(jìn)步，預(yù)制樁施工機(jī)械由落錘、汽錘、柴油錘，發(fā)展到了液壓打樁錘。用液壓打樁錘打樁，可以調(diào)整撞擊應(yīng)力波波形，減小應(yīng)力峰值，延長有效作用時間，是一種比較理想的預(yù)制樁施工機(jī)械，目前在發(fā)達(dá)國家已被廣泛使用，并形成了系列化。
2. It's difficult to find blocking hammer in a sentence. 用blocking hammer造句挺難的