elevator sheave beam

例句：

1. 1.The elevator sheave beam is a critical component of the elevator system.
   电梯滑轮梁是电梯系统的关键部件。
2. 2. The engineer carefully inspected the elevator sheave beam to ensure its safety.
   工程师仔细检查了电梯滑轮梁以确保其安全。
3. 3. The elevator sheave beam was replaced after it broke during the maintenance.
   电梯滑轮梁在维护期间断裂后被更换。