Tightly sealed to prevent air leaks, the house was equipped with small double-paned windows and several other energy-saving features.
为了严格密封,防止空气泄漏,房子配备了小型双层玻璃窗户和其他几种节能的设备。
2
Federal regulations passed after the Sago disaster increased the monitoring of air quality in active and sealed sections of the mines to avoid methane build up.
萨戈矿难后,联邦通过法规,加强了对作业段和密封段内空气质量的监测,以避免甲烷聚集。
3
The third containment is a hermetically (air tight) sealed, very thick bubble of the strongest steel and concrete.