oxygen requirement [微] 需氧量 ; 氧需要量
minimum oxygen requirement 最小需氧量
actual oxygen requirement 作业期间
minimium oxygen requirement 最低需氧量
dissolved oxygen requirement 溶解氧需要量
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。
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