发育型 meaning in Chinese

form of growth

4 ) the major reservoirs are dominated by types of medium matrix - pores and developed fractures , with features of " large pores and small fissures " and " large fractures and micro pores " . statistic analysis shows that when matrix porosity is less than 5 % or fractural density lower than 1 piece per meter , the volcanic rocks are difficult to become or shape reservoirs
该区主要储层为基质孔隙中等裂缝发育型， “大孔小缝”或“大缝小孔”均可形成储层，经统计分析，当基质孔隙度低于5及裂缝密度小于1条/ m的地层，不易形成储集层。