monoblock prestressed concrete sleeper

例句：

1. 1. The monoblock prestressed concrete sleeper is an essential component of the railway track system.
   单块预应力混凝土枕木是铁路轨道系统的一个必要组成部分。
2. 2. The engineer carefully inspected the monoblock prestressed concrete sleeper before laying it on the track.
   工程师在铺设轨道前仔细检查了单块预应力混凝土枕木。
3. 3.The monoblock prestressed concrete sleeper plays a crucial role in maintaining the stability and safety of the railway line.
   单块预应力混凝土枕木在维护铁路线路的稳定性和安全性方面起着至关重要的作用。