internal relation
英 美
System, mechanism and county forestry have a internal relation.
体制、机制与县域林业存在着内在的联系。
Human essence is internal relation of rich and varied needs, that's overstepping nature.
人的本质就是丰富多样的各种需要之间的内在联系,即超越性。
This article, on the design and technology, describes the internal relation of the spiral clutches.
从设计和工艺上叙述了弧齿离合器的内在联系。