“防水剂”造句

喷涂式皮鞋防水剂
a spray-on water repellent for shoes

摘要采用特殊工艺制备了复合型石膏防水剂.
A complex water - repellent gypsum additive was studied in this paper.

厂长引进了一种新的石膏防水剂.
The production manager introduced a new water - repellent gypsum additive.