back-flushing technique

例句：

1. 1.The back-flushing technique is a method used to remove sludge from the water system.
   后冲技术是一种用于从水系统中去除污泥的方法。
2. 2. In this experiment, we used the back-flushing technique to test the effectiveness of our cleaning solution.
   在这个实验中，我们使用了后冲技术来测试我们的清洁剂的有效性。
3. 3. The back-flushing technique has been shown to be more efficient than traditional methods for removing sediment from water systems.
   后冲技术已被证明比传统的方法更有效地从水系统中去除沉积物。