The imbalance between oxygen requirement from Linz-Donawitz process steel-making system and oxygen supply of supporting air separation unit is analyzed.
分析了氧气顶吹转炉炼钢的氧气需求量与所配套空分设备氧气供应量之间的不均衡关系；
Conclusion It has important meaning for certain flow volume and oxygen content blood to keep PBP perfusion and satisfy oxygen requirement of bile duct wall tissue.
结论：一定流量与含氧量的血液对保证PBP灌注，满足胆管壁组织氧的需求有重要的意义。
A key requirement for larger creatures is oxygen, and the dramatic history of oxygen levels is also etched in Ediacaran rocks.
体型更大的生物生存的关键因素是氧气，氧含量的变化史也刻在了埃迪·卡拉岩石群上。
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