| 单词 | growth ring |
| 释义 | > as lemmasgrowth ring growth ring n. the layer of wood added to a tree during one growing season; cf. annual ring n. at annual adj. and n. Compounds 2; ring n.1 7e. ΘΚΠ the world > plants > part of plant > part of tree or woody plant > wood > [noun] > ring or layer insertion1624 ring1664 annual ring1672 year1708 year ring1845 growth ring1907 tree-ring1919 1907 D. P. Penhallow Man. N. Amer. Gymnosperms ii. 24 In proceeding to a study of the transverse section the first feature to which attention is naturally directed is the growth ring. 1937 Discovery Apr. 98/1 The largest of the Sequoias of California, estimated by growth-rings to exceed 3,500 years of life. 1960 N. Polunin Introd. Plant Geogr. i. 13 Where cells of different sizes are produced at different seasons, annual ‘growth-rings’ are formed which may easily be seen in most timbers. < as lemmas |
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