high tensile cast iron

例句：

1. 1. This hightensile cast iron is usedin the production of heavy machinery.
   这种高强度铸铁用于生产重型机械。
2. 2. The engineers designed a new high tensilecast iron structure for the bridge.
   工程师们为桥梁设计了一种新型的高强度铸铁结构。
3. 3. The high tensile cast ironrods are used as reinforcement barsin concrete structures.
   高强度铸铁棒作为混凝土结构的钢筋使用。