density wedge filter

例句：

1. 1. The density wedge filter is used to remove impurities from the water before it reaches the treatment plant.
   密度楔形过滤器用于在水到达处理厂之前去除杂质。
2. 2. The density wedge filter is an effective way to improve the quality of treated water.
   密度楔形过滤器是一种有效提高处理后水质的方法。
3. 3.The density wedge filter is commonly used in water treatment plants to ensure that the water meets the required standards.
   密度楔形过滤器在水处理厂中常用来确保水达到所需标准。