potash alum
英
美
- alum n.[化]白矾;明矾;校友(=alumnus/alumna)
- potash n.钾碱;草碱;碳酸钾
Noun:
-
a white crystalline double sulfate of aluminum: the potassium double sulfate of aluminum
- You can clarify the water by adding a little alum.
你在水里加一点明矾就能使水净化。
- But chemical mordants such as alum are popular today.
但化学腐蚀剂如明矾今天已经十分普遍。