其部分原因是涡轮螺旋桨飞机结构坚固，部分原因是“空中拖拉机”公司生产的油箱有多层橡胶密封，一旦子弹射穿油箱，橡胶层就会自动封闭住弹孔，减缓燃油的渗漏。
In part this is because of the turboprops' robust design, and in part because Air Tractor's fuel tanks have rubber membranes which close around bullet holes to slow leaks.
文章讨论了航空波导结构密封失效的故障机理，表面活性、胶层弹性模量、热膨胀、以及因环境变化产生应力等引起密封失效的有关因素。
Study on failure mechanism shown: the main cause is the deformation stress due to environment changes that resulted high leakage failure ratio during environment conditional tests.
两层玻璃与一张特殊的热镜薄膜组合由双层特种隔离条分隔形成一种特殊的双中空结构，并采用双层硅胶密封。
Two pieces of glass and one suspended Heat Mirror film construct the unique dual-space structure. The insulating gaps are separated by high performance spacers, and dually sealed by sealant.
采用化学氧化层底漆密封胶三层防腐修复工艺，原位修复飞机铝合金结构件表面腐蚀。试验了修复层的防腐蚀性能。该工艺防腐蚀效果好，施工简单，成本低，有较强的实用性。
The technology for renovating aeroplane aluminum alloy structural member corrosion in original place is introduced. The technology has the merits of low cost, simplicity in treatment and high quality.
以不活泼的氮气充入绝缘介质层构成细密均匀的微孔结构，各微孔间互不连通，类似一个个密封仓。
As the inactive nitrogen in insulated dielectric layer, it will form an even and compact micro-hole structure with no linkage between each micro-hole which like the sealed room.
大缸径油缸全部采用优质钢整体锻打结构，密封结构采用当前世界上最先进的无泄漏七层组合密封技术。
Large diameter steel tanks, all of the overall quality of Beating structure, seal structure without using the world's most advanced combination of the 7-leak sealing technology.
大缸径油缸全部采用优质钢整体锻打结构，密封结构采用当前世界上最先进的无泄漏七层组合密封技术。
Large diameter steel tanks, all of the overall quality of Beating structure, seal structure without using the world's most advanced combination of the 7-leak sealing technology.
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