hand drill steel

例句：

1. 1. The engineer used a handdrill to make the holes in the steelplates.
   工程师用手钻在钢板上打孔。
2. 2. The construction site required a lot ofhand drill steel for the scaffolding.
   施工现场需要大量的手钻钢来搭建脚手架。
3. 3. The steel was hand drilled toensure its strength and durability.
   这种钢材经过手工钻孔，以确保其强度和耐用性。