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| Chinese | English |
| 最大容许浓度 | maximum admissible concentration The maximum exposure to a physical or chemical agent allowed in an 8-hour work day to prevent disease or injury (8小时工作日中为避免致病或伤害而允许的最大可接触的物理或化学药剂量。) |
| 最大注人［污染物］浓度 | maximal immission concentration |
| 最大注入浓度 | maximum immission concentration The maximum concentration of air polluting substances in the free environment whose impact when of specified duration and frequency is not objectionable to man, fauna and flora (特定时段里自由环境中空气污染物的影响不至于引起人类和动植物发生不良反应的最大浓度。) |
| 最大致死浓度 | maximum lethal concentration |
| 水中最大允许浓度 | maximum permissible concentration in water |