water tightness

It's structure must be air tightness, no water percolation and no air leakage. Countermeasures against Gas Leakage from Bell Socket of Cast-iron Pipe after Natural Gas Conversion

结构要求密闭，不渗水、不漏气。天然气置换后铸铁管承插接口漏气对策

Superstructure compressed air ( water supply , fire fighting , smoke detection ) piping tightness test.

上层建筑压缩空气管系 ( 水管 、 防管 、 雾探测管 ) 性试验.

Results showed that the thermostability and water tightness of NPER are excellent.

结果表明,NPER固化物具有良好的热稳定性和耐水性.

In that case, special stuffing tube will be used to keep the water tightness.

那样的话, 需要安装专用的密封过管来确保水密.

Carts that become warped preventing water tightness are unacceptable.

因为筒变形而不能很好的装水是我们不允许的.

The paper analyzes the leakage and risks of throbbing pipe and points out that the present method of water tightness test is not suitable for the throbbing pipe construction in the soft-soil and high-water-level area, putting forward ways to solve the problem.

本文对顶管施工后的渗漏及其危害性进行分析，指出了当前普遍采用的闭水试验验收方法不适合高水位软土地区顶管施工，提出了相应解决办法。

BES building system has gained rich experience in dealing with the roof loading and water tightness.

东德(BES)建筑系统在屋面的防水及抗荷载方面有良好的技术措施及丰富的施工经验.

Inspection installation and water tightness transducer of echo sounder on berth.

测深仪换能器船台安装和水密性检查.