As the kernel interoperation criteria of OGC, GML works as adhesive in interoperation framework, which is of great significance in driving the spatial interoperation forward.

• 作为OGC核心的互操作规范，GML起到了互操作框架体系“粘合剂”的作用，对于推动空间互操作发展有着非常重要的意义。