| 释义 |
pollen count
pollen countn. A measure of the amount of pollen in the air, usually calculated as the average number of pollen grains in a cubic meter or other standard volume over a 24-hour period.pollen count n a measure of the pollen present in the air over a 24-hour period, often published to enable sufferers from hay fever to predict the severity of their attacks pol′len count`
n. a count of the pollen in the air, based on the average number of pollen grains collected from the air in a given time. Thesaurus| Noun | 1. | pollen count - the number of pollen grains (usually ragweed) in a standard volume of air over a twenty-four hour period and a specified time and placecount - the total number counted; "a blood count" |
Translationsquota di polline nell'aria
pollen count
pollen count[′päl·ən ‚kau̇nt] (botany) The number of grains of pollen that collect on a specified area (often taken as 1 square centimeter) in a specified time. pollen count
pollen countn. A measure of the amount of pollen in the air, usually calculated as the average number of pollen grains in a cubic meter or other standard volume over a 24-hour period.pollen count The number of pollen grains (ragweed, grass, etc.)/m3 of air.
Method
A greased silicone rod—to which the pollen will stick—is rotated in the air sample of interest. The rod is then washed down and the particles counted, ranging from 2 (low) to 12 (high).pollen count Allergy medicine An estimate of the number of pollen particles in a standard volume of airpollen countThe concentration of grains of pollen found in the atmosphere on a given day in a specific location. The measurement is used by allergy sufferers to forecast the likelihood they will have allergic symptoms, e.g., sneezing, sniffling, or wheezing. See also: countLegalSeecountFinancialSeeCountpollen count
Related to pollen count: hay fever, Pollen allergyWords related to pollen countnoun the number of pollen grains (usually ragweed) in a standard volume of air over a twenty-four hour period and a specified time and placeRelated Words |