linear wave

例句：

1. 1. The waves were traveling in a linear pattern.
   波浪以直线模式传播。
2. 2.The scientist used a linear wave to measure the distance between two points.
   科学家使用线性波来测量两点之间的距离。
3. 3.The sound waves travel in a linear fashion.
   声波以直线方式传播。