Summary of Background Data.

数据背景概要。

Combining background data and named graphs.

组合后台数据和命名图。

Queries may also use background data in conjunction with named graphs.

查询也可以把后台数据和命名图结合在一起使用。

Summary of Background Data. ASD can be a long-term complication after fusion.

研究背景：邻近阶段退变（ASD）是融合术后的一个长期并发症。

Summary of Background Data. Long-term prognosis of WAD has not been fully elucidated.

背景资料摘要：WAD的长期预后尚未完全阐明。