英文英文字典
英文英文字典
古腾堡计划中的在线英语-英语词典
结果
Umbelliferone的结果
Umbelliferone
(n.)
A tasteless white crystalline substance, C9H6O3,
found in the bark of a certain plant (Daphne Mezereum), and also
obtained by the distillation of certain gums from the Umbelliferae, as
galbanum, asafetida, etc. It is analogous to coumarin. Called also
hydroxy-coumarin.