unit length of signal

例句：

1. 1.The engineer calculated the unit length of the cable to ensure it would not exceed the required length.
   工程师计算了电缆的单位长度，以确保它不会超过所需的长度。
2. 2.The team used a specialized software to measure the unit length of the beam accurately.
   团队使用了一种专门的软件来准确地测量梁的单位长度。
3. 3. The manufacturer's specifications state that the unit length of the screws should be no less than 50 mm for optimal performance.
   制造商的规格说明，螺丝的单位长度应不小于50毫米，以获得最佳性能。