In 1971, it was brought into production test and utilized irregular dispersed well pattern of wide spacing for exploitation.
1971年投入试采，采用不规则大井距面积井网开发。
2
It can be applied to large irregular-spacing geophysical, geochemical and other data for the computation of regional anomalies, local anomalies and trend surfaces and for the smoothing etc.
This thesis points out the incorrect methods for seeking the spacing between the contour lines of irregular sloping field, gives out and proves the right ways.