It is important to do well the construction waterproof work. The design is essential prerequisite.

做好建筑防水，设计是前提，保证设计质量有三个重要环节。

youdao

Combined with practical work the construction technology of sandwich plastic board in roof waterproof work is introduced as well as the points for attention in construction.

结合具体工程实践，阐述了建筑夹层塑料成型板在屋面防水施工中的施工步骤及工艺，并介绍了施工中的注意事项，经实验证明，此材料效果良好，可杜绝渗漏现。

youdao

The waterproof performance: sealed craft design can be placed in the normal work, special alloy shell to ensure that products can withstand strong collision and impact.

防水性能：全密封性工艺设计，可置于水中正常工作，特制合金外壳确保产品能经受强力碰撞和冲击。

youdao

And they were provided with suitable clothing for their work, including corduroy trousers and waterproof boots.

BBC: Work camps that tackled Depression

Mr. GARY MILLER (Owner, Miller Dry Goods): You know, we carry a lot of work boots, you know, that have to be waterproof and frocks that are fire retardant, like all of this stuff, all of these Carhartt products right there.

NPR: Cashing In on Economic Downturn