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
Trimethylene的结果
Trimethylene
(n.)
A gaseous hydrocarbon, C3H6, isomeric with propylene
and obtained from it indirectly. It is the base of a series of
compounds analogous to the aromatic hydrocarbons.