needled steel

例句：

1. 1. The engineer used needled steel to reinforce the structure.
   工程师使用精加工钢材来加固结构。
2. 2. Shot-peened steel is often used inheavy machinery for its strength and durability.
   重机械中常用砂粒喷丸钢材，因其强度和耐用性而受到青睐。
3. 3. The construction of this bridge required alot of needled steel to resist thehigh loads.
   这座桥梁的建设需要大量精加工钢材来承受高负载。