minimum lethal oxygen concentration

例句：

1. 1. The minimum lethal oxygen concentrationfor this type of poison is 0.5%.
   这种毒药的最低致死氧浓度是0.5%。
2. 2. The researchersfound that the minimum lethal oxygen concentrationfor carbon monoxide was 10ppm.
   研究人员发现，一氧化碳的最低致死氧浓度为10ppm。
3. 3. The safety standards for this productmust be set at the minimum lethaloxygen concentration to ensure consumer safety.
   为了确保消费者安全，该产品的安全标准必须设定在最小致死氧浓度。