alum['æləm]  

• n. 明矾

常用短语

1. ammonia alum   
   氨明矾，铵明矾，硫酸铝铵
2. potassium alum   
   铝钾矾，钾矾，钾明矾
3. ammonium alum   
   铵矾，铵铝矾
4. chrome alum   
   铬明矾
5. potash alum   
   明矾，纤钾明矾

英英解释

4个名词解释

1. a person who has received a degree from a school (high school or college or university)
   [同] grad , graduate , alum , alumna , alumnus
   
2. a white crystalline double sulfate of aluminum: the ammonium double sulfate of aluminum
   [同] alum , ammonia alum , ammonium alum
   
3. a white crystalline double sulfate of aluminum: the potassium double sulfate of aluminum
   [同] alum , potash alum , potassium alum
   
4. a double sulphate of aluminum and potassium that is used as an astringent (among other things)