目前，在整体压裂优化设计方面，人们对五点井网和反九点井网的研究较多，而对菱形反九点井网的研究较少。
At present, more integral fracturing design research focus on five - spot well network and nine - spot well network but little on rhombus anti - nine - spot well network.
就像之前提到的，宿命点一般落在星盘的西边，第五到第八宫之间，与反宿命点成180度对等。
As noted earlier, the vertex falls usually between the fifth and the eight house, on the western side of the chart, with the anti-vertex 180 degrees opposition.
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