Every industrial cluster has its lifecycle and it can be divided into formative phase, growth phase, maturityphase and shakeout phase.
产业集群具有生命周期，并可以大致划分为诞生、成长、成熟和衰退四个阶段。
2
Therefore, the mechanism that humic-type organic matter can generate gas on a large scale in low-maturityphase can be used to reasonably explain the genesis of the gas in this field.
因此，可以用腐殖型有机质在低演化阶段能规模性成气的机理合理解释该气田的成因。
3
Phase 3: Calculate the product's overall maturity score.