| 单词 | perforation plate |
| 释义 | > as lemmasperforation plate perforation plate n. Botany (in a xylem vessel) a perforated area in the common wall of adjacent vessel members, allowing the passage of water and solutes between them. ΘΚΠ the world > plants > part of plant > cell or aggregate tissue > [noun] > tissue > xylem or phloem > parts of perforation plate1933 1933 Trop. Woods 36 7 Perforation plate, a term of convenience for the area of the wall (originally imperforate) involved in the coalescence of two members of a vessel. 1953 K. Esau Plant Anat. xi. 223 The perforations of vessel members commonly occur on the end walls, but they may be present on the lateral walls too. The wall bearing the perforation is called the perforation plate. 1998 Jrnl. Torrey Bot. Soc. 125 265/1 All vessels have simple perforation plates. < as lemmas |
| 随便看 |
英语词典包含1132095条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。