| Chinese | English |
| 允许 | permission The license, formal consent or authorization to act on some matter, frequently validating the action as lawful or procedurally correct (授权，对某些问题正式同意或授权法案，并通过多次验证来确定决定是否正确。) |
| 允许暴露极限 | permissible exposure limit An exposure limit that is set for exposure to an hazardous substance or harmful agent and enforced by OSHA (Occupational Safety and Health Act) as a legal standard. It is based on time-weighted average concentrations for a normal 8-hour work day and 40 hour work week (这是由职业健康安全局(管理职业安全和健康行为)对曝光限制和有害物质所制定的法定标准。它是基于工作时间强度，如40小时/周，8个小时/天的工作时间。) |
| 最大允许剂量 | maximum permissible dose |
| 最大允许剂量 | maximum allowable dose |
| 每日允许摄入量 | acceptable daily intake The measurement of the amount of any chemical substance that can be safely consumed by a human being in a day. Calculations are usually based on the maximum level of a substance that can be fed to animals without producing any harmful effects. This is divided by a "safety factor" to allow for the differences between animals and humans and to take account of the variation in human diets (人一天内可安全摄入的化学物质计量。计算结果通常以动物可摄入且不产生有害影响的物质最大量为基础。依据"安全因素"进行划分，以兼顾人类和动物的不同以及不同人的饮食差异。) |
| 水中最大允许浓度 | maximum permissible concentration in water |
| 规管最大允许限度 | regulation on maximum permissible limits A body of rules or orders prescribed by a government or an international organization or treaty establishing levels of hazardous materials in the environment or in ingestible substances beyond which human exposure is deemed health-threatening (由政府或国际组织或条约建立的一种规则或规定，规范在环境中或在可摄取的物质中有害物质的标准，如果超过这一标准人们会受到健康威胁。) |
