sand seal

用法例句

This paper introduces seal sand slurry s peculiarity of waterproof, cost cheap, no pollution and states its craft principle, use range, use method, it has the guidance function for construction technician.

本文首先介绍了密封砂浆不透水、造价便宜、无污染等特点,然后详细论述了其工艺原理、适用范围、操作方法及施工要点,对施工技术人员具有一定的指导作用。