waterproof cement

基本解释

They used waterproof cement to prevent water from seeping through the roof of the tunnel.
他們用防水的水泥防止水從隧道頂部滲入。
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They used waterproof cement to prevent water from seeping through the roof of the runnel.
他們用防水水泥來防止水從屋頂的排水通道裡滲透。
A new waterproof material, i. e. waterproof cement roof slab reinforced with vegetable fibre, is introduced in the paper and its process of development and properties as well.
本文介紹了一種新型防水材料即植物纖維水泥防滲漏屋麪板，闡述了該材料的研制過程及其性能。