In 1971, it was brought into production test and utilized irregular dispersed well pattern of widespacing for exploitation.
1971年投入试采，采用不规则大井距面积井网开发。
2
When contrast-enhanced CT depicts hypervascularity of the mesentery with vascular dilatation, tortuosity, and widespacing of the vasa recta , the comb sign is produced.
当增强CT显示血管扩张、迂曲而血管增多的肠系膜和广泛分布的直小血管，产生梳征。
3
When the density of transplant is 14.3 holes per centare, applying fertilizing of super widespacing planting will have advantages of increasing rice yield on cold water paddy soil.