To improve the waterproof wall and air tightness.
有利于提高墙体的防水和气密性。
Our insulating glass, soundproof and heat resistant, is good at water & air tightness and can proof water and wind.
中空玻璃设计,隔音隔热,具有极佳的水密性和气密性,防风防水。
The spacecraft would be assembled at the launch center after experts finish examining its air tightness and electric properties.
神七将在载人航天发射场总装测试厂房进行气密性检查、电性能测试等,然后完成总装,预计在10月份发射升空。
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