airtight seal

• 空气密封,气密

airtight seal的用法和样例：

例句

1. Therefore, in the use of the two hemispheres should be to maintain the smooth surface to ensure a good airtight effect.
   因此，在使用时应保持两个半球面的光洁，以确保良好的气密效果。
2. Absorb the quintessence of European and American energy-saving window technology with high airtight and watertight performance.
   吸取欧美节能窗技术之精华，气密水密性能较高。