随着土壤潜性酸度的增加，各年龄阶段森林土壤有机磷总量、中稳性有机磷和高稳性有机磷含量降低。
With potential acidity increasing, total organic phosphorus, moderately resistant organic phosphorus, and highly resistant organic phosphorus in larch plantations decreased for all stands.
改性后超稳Y型分子筛的晶体结构热稳定性增加，脉冲微反试验的正已烷裂解活性下降而烯烃选择性得到提高。
The thermal stability ofthe crystal structure of modified USY zeolite is increased, and n-hexane cracking activity ina pulse micro-reactor is decreased, while the olefin selectivity is increased.
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