primary control factor的用法和样例：
例句
- Research shows that maceral and the degree of metamorphism of coal rock are key factors that control the generating and storing capacity of coal rock.
煤岩组分和煤变质程度是影响煤层生储气能力的主控因素。 - The controlling factors for the hydrocarbon accumulation in the Cretaceous strata in the Jiangling depression have long been one of the controversial problems.
摘要作为江陵凹陷油气勘探的领域之一，白垩系在许多关键问题上还存在分歧和争议，白垩系的成藏主控因素是争论的焦点问题之一。
