| 单词 | annual ring |
| 释义 | > as lemmasannual ring annual ring n. each of the concentric bands of wood in a tree corresponding to the growth of a single year or growing season (see ring n.1 7d); (also) each of a similar set of bands or zones in some other natural structure, such as an animal's horn or shell. ΚΠ 1672 N. Grew Anat. Veg. sig. O5 (caption) The Black Lines are the lignous Body. The several Shootings thereof betwixt the black Circles shew the Annuall Rings. 1796 G. Gregory Econ. Nature III. viii. i. 4 These annual rings, which are visible in most trees when cut transversely, serve as marks to determine their age. 1970 Field & Stream Oct. 192/3 The annual rings on the horns [sc. of mountain goats] result from a difference in the growth rate between summer and winter. 2000 Dendrochronology (English Heritage) 17/2 Wood samples, containing several annual rings, are taken at known intervals from the timber to be dated and submitted for high-precision radiocarbon dating. < as lemmas |
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