Selecting a suitable method of leak detection and measurement is the pledge to evaluate the tightness of systems and equipment correctly.
选用合适的检漏方法是正确评定系统和设备紧密性的前提。
2
The building's outer Windows with a large heat transfer coefficient and a poor leaktightness are the key positions, where energy is consumed.
建筑外窗的传热系数大，气密性差，是建筑能耗的重点部位。
3
Flexible disc springs automatically provide leaktightness by exerting pressure, which keeps the upper and lower valve sealing rings compressed at all times.