| 单词 | Pappus |
| 分类 | 造句方法、万能句子、例句及翻译、英语例句大全 |
| 释义 | 1 Achenes 8 - ribbed, white pilose; pappus scabrous, 10 - 12 mm long, connate at base. 2 After dispersal, the short pappus of the achenes can adhere to the wet soil surface so that the achenes remain near the dead mother plant and germinate there. 3 The seeds often furnished with apical pappus , can act as parachutes for wind-dispersal. 4 Parachute n. special structure of seeds such us aril, caruncle, pappus , or wing, which aids dispersal by wind; a fold of skin used for gliding as in flying squirrels. 5 Some examples are given by inscribed and circumscribed circles of polygons, lines intersecting and tangent to conic sections, the Pappus and Menelaus configurations of points and lines. 6 The third and fourth chapters introduce the famous theorems of Desargues and Pappus. |
| 随便看 |
|
英语词典包含340727条英汉在线翻译词条,基本涵盖了全部常用单词的翻译及用法,是英语学习的有利工具。