- 双语例句
1、
One - step synthesis of salicylaldehyde with phenol and paraformaldehyde as raw materials along with catalyst is introduced.
介绍了以苯酚和多聚甲醛为原料,在催化剂作用下,经一步反应直接合成水杨醛的情况.
互联网
- 今日热词
- 热门搜索