Composite materials have been used for many years inside commercial aircraft.

复合材料已经在商用飞机上使用了多年。

That's called a " composite" material, and engineers use them all the time.

这被称为“复合”材料，工程师们一直在使用它们。

Allegheny Technologies, which makes composite materials used in the aircraft, has been similarly clobbered.

制造飞机所用复合材料的阿勒格尼技术公司也遭受了类似的打击。

Beijing University of Chemical Technology uses a carbon fiber composite material to create its admission letters.

北京化工大学使用碳纤维复合材料制作录取通知书。

In another part of the center, researchers are testing a new way of manufacturing composite materials.

在航天局的另一地方，研究者在测试制造合成材料的新方法。

The crash may become an important test of the safety of composite materials for some uses in aircraft.

这起飞机相撞事故可能会成为对飞机上有某些用途的复合材料安全性的重要考验。

The FAA has said for more than 20 years that there are dangers related to composite materials.

20多年来，美国联邦航空局一直表示，复合材料存在危险。

It can not only be recycled and degraded, but the composite material recovery rate can reach more than 95 percent.

它不仅可以回收降解，而且复合材料回收率可达 95%以上。

Composite materials make up 50 percent of the primary structure, including the fuselage and wing.

复合材料占主要结构的 50%，包括机身和机翼。

Goglia said there is no real evidence whether composite materials or aluminum are better at resisting fire long enough to protect people.

戈利亚说，目前还没有真正的证据证明复合材料和铝材料中哪一种材料的防火性能更好，更能保护人们。