| 单词 | ambient air standard |
| 释义 | ambient air standardnounthe highest concentration of a specific air pollutant at a particular outdoor location, in a specified unit of time, that is not considered hazardous to humans: The ambient air standard for gas X is 3 parts per million per hour. Origin of ambient air standardFirst recorded in 1970–75 Words nearby ambient air standardambidexterity, ambidextrous, Ambien, ambience, ambient, ambient air standard, ambiente, ambient music, ambient noise, ambiguity, ambiguous Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 |
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