block check procedure

例句：

1. 1. The engineer performed a block check on the machine before it was put into operation.
   工程师在机器投入运行前进行了一次阻断检查。
2. 2. During the block check, the technician discovered an issue with the circuitry.
   在进行阻断检查时，技术人员发现了电路的问题。
3. 3. The block check procedure is crucial for ensuring the safety of the equipment.
   阻断检查程序对于确保设备安全至关重要。