vertical interval test signal

例句：

1. 1. The vertical interval test signalis used to measure the distance between twopoints on a line.
   垂直间隔测试信号用于测量线段上两点之间的距离。
2. 2. In thisexperiment, we used the vertical interval testsignal to detect the presence of interference.
   在这个实验中，我们使用垂直间隔测试信号来检测干扰的存在。
3. 3. The verticalinterval test signal was usedto verify the accuracy of themeasurement device.
   垂直间隔测试信号被用来验证测量设备的准确度。