block instrument failure

例句：

1. 1. The block instrument failed to detect the incoming signal.
   这个仪器未能检测到传入的信号。
2. 2. The engineer was unable to fix the block instrument failure.
   工程师无法修复仪器故障。
3. 3. The technician had to replace the block instrument due to the failure.
   技术人员不得不更换因故障而损坏的仪器。