hammer blow的用法和樣例：
例句
- The drivability study of piling requires modeling of the hammer impact to calculate the input force wave at the pile head.
摘要樁的可打性研究需要模擬樁的錘擊，計算出樁頂的應力波。 - He would hammer a nail into the wood with a series of blows that continued to down long after the head was flush with the boards.
他老是連續不斷地錘擊，把釘子敲進木頭，而且釘頭與板面平齊之後，還是一個勁兒地敲。
