| 单词 | leaf angle |
| 释义 | > as lemmasleaf angle leaf angle n. Botany the angle between a leaf petiole and the stem of a plant; (also) the angle of a leaf's surface in relation to the sun. ΚΠ 1860 H. Coultas What may be learned from Tree v. 86 Vitally active buds are produced..only in the leaf-angles of the upper and more powerfully developed part of the year's shoot. 1894 Bot. Gaz. 19 219 The curve seems to indicate a slight decline in the petiole during the middle of the day, but on account of the difficulty experienced in reading the leaf angles to fractions of a degree, I do not feel safe in giving this as a final conclusion. 1946 N.Y. Times 10 Nov. x. 21 Dainty pink flowers borne in clusters at the ends of the branches and at the leaf angles from June to August. 2008 Oecologia 157 3/1 Leaf angles of 20 leaves randomly distributed over the tree's crown were measured for six individuals per species. < as lemmas |
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