difference correlation造句

In the real estate investment early warning system , this paper firstly analysis the time difference correlation about the real estate investment index and other indexes . then some leading indexes are selected to act as the basis indexes system of the whole early warning system
在房地产投资预警信号系统设计中，首先以房地产投资为基本指标，分析出其他有关房地产业指标与房地产投资指标之间的时滞关系，然后根据一定原则适当地选取时间关系上处于先行的指标（也叫先兆指标）作为系统分析的基础指标体系。
It's difficult to find difference correlation in a sentence. 用difference correlation造句挺难的