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。
Oxygen Number (FTC requires less than 20). Many companies have a stricter requirement such as 10 or 8. Canada and the USA-FTC are both considering a new regulation of 10 or less.
耗氧指数(联邦贸易法ftc要求小于20)。许多公司严格要求达到10或者8。加拿大和美国- FTC都顾及到新的法规要求达到或者小于10。
This is achieved a variety of ways, all of which are aimed toward reducing the myocardial oxygen requirement of the heart during that period.
实现这个目的有多种途径，所有这些都以减少这期间的心肌耗氧量为目标。
Based on the analysis of the requirement of oxygen supply system for BF oxy-coal process, oxygen supply and safe-control technology is investigated.
在分析高炉富氧喷煤对炉前供氧系统的要求之基础上，研究开发了高炉炉前供氧与安全控制技术。
It can improve the control quality to fit the requirement of a process control system for use with a no oxygen copper rod furnace.
该方案在无氧铜杆炉控制系统投用，使控制性能有较大的提高，能满足生产过程的要求。
These models include energy requirement model, energy consume model, energy wastage model. The energy requirement model is made up of oxygen blowing and electric energy model.
需求能量模型、能量消耗模型、能量损耗模型，其中需求能量模型包括吹氧模型及电能模型。
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。
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。
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