| 单词 | sieve tube |
| 例句 | Phloem sap travels through perforations called sieve tube plates. Biology for AP Courses 2022-06-09T00:00:00Z Annular vessel; 2. spiral vessel; 3. pitted vessel; 4. phloëm or sieve tubes; 5. sclerenchyma. A Handbook of Some South Indian Grasses J, sieve tube from the underground stem, × 300. Elements of Structural and Systematic Botany For High Schools and Elementary College Courses Annular vessel; 2. spiral vessel; 3. pitted vessel; 4. sieve tubes or phloëm; 5. sclerenchyma. A Handbook of Some South Indian Grasses The rest of the bundle is made up of nearly uniform, rather thin-walled, colorless cells, some of which, however, are larger, and have perforated cross-walls, representing the sieve tubes of the fern bundle. Elements of Structural and Systematic Botany For High Schools and Elementary College Courses The wood is distinguished by the presence of vessels with close, spiral or ring-shaped thickenings, while in the phloem are found sieve tubes, not unlike those in the ferns. Elements of Structural and Systematic Botany For High Schools and Elementary College Courses This is the phloëm and it consists of sieve tubes and thin-walled cells. A Handbook of Some South Indian Grasses |
| 随便看 |
英语例句辞典收录了117811条英语例句在线翻译词条，基本涵盖了全部常用单词及词组的例句翻译及用法，是英语学习的有利工具。