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| English | Arabic |
| economic concentration The extent to which a market is taken up by producers within a given industry | التركيز الاقتصادي |
| maximum admissible concentration The maximum exposure to a physical or chemical agent allowed in an 8-hour work day to prevent disease or injury | أقصى تركيز مقبول |
| 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 | التركيز الأقصى للاستقبال |
| pollutant concentration A measure of the amount of a polluting substance in a given amount of water, soil, air, food or other medium | تركيز الملوثات |
| settlement concentration The distribution or total amount of communities, villages and houses within a specified geographic area | تركز سكني |
| sulphur concentration Sulphur content in a solution | تركيز الكبريت |
| urban concentration A process in which an increasing proportion of a country's population is concentrated in urban areas | تركز حضري |