water tightness是什么意思

用法例句

Comparing with the traditional patching method of using small plates and L-bolt with the help of chain hoist, this technique deploys a complete steel plate and chain block to patch a big hole underwater, which would reduce the workload of the divers, improve work efficiency, and ensure the structural strength as well as the water tightness after completion.

改变传统的弯钩螺丝加小件板勾连船体的封补工艺,以手拉葫芦提供拉合力,用整件大钢板封补水下大破洞,既减轻潜水员的工作量,提高工作效率,又保证封补后强度够,水密度佳。

The original creation of this modification is the water sealing between pallet side plates and exhaust hood.

就马钢一铁总厂抽风环冷机存在的问题,以及该厂所面临的生产形势,阐述了进行环冷机整体优化改造的必要性,并介绍了优化改造的思路及具体实施方案,指出了该改造的创新之处和优良效果,尤其是水密封等新技术的成功运用。

Design of soft water system of closed circuit and its application in iron-smelting furnace;

软水密闭循环系统设计在炼铁高炉中的应用