1)heavy punch,重锤重冲头2)tension weight churning,重锤冲击3)toe-end weight,网头重锤4)driving punch,重冲头5)expanded bore used heavy hammer,重锤冲击成孔6)hammer crane,锤头式起重机
用法例句
Combined with the construction practice,the paper introduced the construction methods and the quality guarantee measures of tension weight churning in the construction of deep-hole group piles.
