词族 · gutta-percha
词形变化
英语词源
- gutta-percha (n.)
- 1845, from Malay getah percha, literally "the gum of percha," the name of the tree; the form of the word was influenced by Latin gutta "drop." As the name of the tree itself, from 1860.
权威例句
- 1. Methods: Tooth root Injected solidified calcium phosphate cataplasm tube, then pressed with gutta peneha points.
- 方法自固化磷酸钙充填糊剂根管内注入后加牙胶尖挤压.
- 2. Conclusions Concentrated cod - liver oil gutta and erythromycin can promote the ulcer to heal.
- 结论浓缩鱼肝油滴剂加红霉素可促进溃疡愈合.
- 3. The results showed aspergillus niger BN fungus, and the productive rate of gutta - perch increased 13.3 %.
- 结果表明,黑曲霉BN易于分解杜仲叶, 且经其发酵处理后胶得率可提高13.3%.