单词：wave front
wave front的用法和样例：
例句
- At each interface the spreading wave front is made discontinuous.在每一分界面上扩展的波前出现间断。
- Successive wave fronts in this case form a series of concentric spheres.相继波前形成了一系列的同心球面。
- The characteristic surface is essentially an acceleration front.特征曲面实质上是一种加速度波的波阵面。
- It starts with zero and grows to a maximum slightly behind the wave front.它从零值开始，并在稍后于波阵面处增长到最大值。
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