So what do these compositions mean in  terms of their use as runway surfaces?

那么这些成分在用作跑道表面方面意味着什么？

Overall, airport engineers factor in  various aspects, including climate, traffic, and raw material access, when  it comes to choosing a runway surface.

总体而言，机场工程师在选择跑道表面时会考虑多个方面，包括气候、交通和原材料获取。