词族 · Betula
词形变化
英语词源
- Betula (n.)
- genus of the birches, from Latin betula "birch," from Gaulish betu- "bitumen" (cognates: Middle Irish beithe "box tree," Welsh bedwen "birch tree"). According to Pliny, so called because the Gauls extracted tar from birches. Birch tar is still sold as an analgesic and stimulant and made into birch beer by the Pennsylvania Dutch.
权威例句
- 1. For your career, Betula forest without relying on heaven - sent, mainly by self - seeking.
- 适合你的事业, 白桦林不靠天赐, 主要靠 自我 寻找.
- 2. Arimatsu economic timber , Parkinson , Chatham , Betula, Tilia, Green and other species.
- 经济用材林有松 、 柏、漆、桦 、 椴 、 青等树种.
- 3. The microwave - assisted extraction ( MAE ) of betulin from Betula platyphylla Suk.
- 利用均匀设计法优化了微波辅助提取白桦树皮中桦木醇的工艺.
- 4. To oak trees, Betula , Chatham, Yang and other broad - leaved forest dominated.
- 树种以栎 、 桦、漆 、 杨等阔叶林为主.
- 5. The author discussed the recent use, economic results growth technology and expand prospect of Betula Luminifera.
- 对光皮桦资源的利用现状 、 经济效益、造林技术及发展前景进行了论述.