| 单词 | pollen count |
| 释义 | > as lemmaspollen count pollen count n. an index of the quantity of pollen in the atmosphere, issued as a warning to sufferers from hay fever; (also) an estimate of the quantity of pollen in a soil sample. ΘΚΠ the world > matter > gas > air > [noun] > air in any specific place or at specific time > amount of pollen in air pollen count1926 pollen index1939 society > communication > indication > marking > a mark > trace or vestige > [noun] > other traces or vestiges staddle1691 Indian sign1805 geological record1811 powder mark1823 earmark1836 rock record1851 tool-mark1865 staddle-stead1868 staddle-mark1876 waterline1876 posthole1888 tooth-mark1889 pollen count1926 snake mark1929 parch mark1947 tranchet blow1949 posthole pattern1950 posthole evidence1962 1873 C. J. Blackley Exper. Res. on Catarrhus Æstivus iv. 122 After being exposed for twenty-four hours, each slip was placed under the microscope, and any deposit it contained was carefully examined, and the number of pollen grains counted.] 1926 Jrnl. Amer. Med. Assoc. 86 1205/1 For the air study..differential pollen counts were made daily. 1975 G. W. Dimbleby in R. Bruce-Mitford Sutton Hoo Ship-burial I. i. 68 (heading) Soil under ship-barrow pollen counts. 1991 She May 73/1 (advt.) Although peak pollen counts have fallen over the last 20 years, GP consultations for hayfever were shown to double between 1970 and 1980. < as lemmas |
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