quenched troostite

例句：

1. 1. The engineerused a special quenching process toharden the steel.
   工程师使用特殊的淬火过程来硬化钢铁。
2. 2. The quenched steelis stronger and more durable than its untreated counterpart.
   淬火后的钢材比未经处理的同类材料更坚固耐用。
3. 3. Quenched steel is often used in construction dueto its high strength and resistance to corrosion.
   由于其高强度和抗腐蚀性，淬火钢常用于建筑领域。