脱氮效率
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nitrogen loss efficiency
氮损失率
以上为机器翻译结果，长、整句建议使用 人工翻译 。
But the energy used to separate oxygen from air before burning is almost as great as that needed to filter out nitrogen afterwards, leading to a similar loss of efficiency.
但是燃烧前将氧气从空气中分离所需的能源几乎不亚于上述将氮气过滤所需的耗费，这就使得两者在效率损失上不相上下。
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