交叉学科与边缘学科、综合学科、横向学科有程度不同的重叠关系，但并不完全等同。
There are different degrees of overlapping relationships among interdisciplinarity and frontier science, synthetic science and horizontal science, but they are not all the same.
通过追踪安全等深线，获取障碍区，然后测试线段与障碍区的空间关系来智能地搜索最短路径。
The algorithm traces safety sea contour and obtains obstacle areas, and then creates intelligently the shortest route by comparing spatial relations of line segments and obstacle areas.
文章以数据库中的函数依赖来检查多层关系数据库的各个属性的安全等级，并在此基础上调整各个属性的安全等级，以保证数据的安全性。
It is discussed in the paper how to check and adjust the security level of the attributes of the multilevel relation database in the point of FD.
文章以数据库中的函数依赖来检查多层关系数据库的各个属性的安全等级，并在此基础上调整各个属性的安全等级，以保证数据的安全性。
It is discussed in the paper how to check and adjust the security level of the attributes of the multilevel relation database in the point of FD.
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