alum

英 [ˈæləm]

美 [ˈæləm]

n.  明矾，白矾(用于制革、印染等)

复数：alums　

化学

BNC.28085 / COCA.17889

牛津词典

noun

• 明矾，白矾（用于制革、印染等）
  a substance formed from aluminium/aluminum and another metal, used, for example, to prepare leather and to change the colour of things

英英释义

noun

• a double sulphate of aluminum and potassium that is used as an astringent (among other things)
• a person who has received a degree from a school (high school or college or university)
  Synonym:alumnusalumnagraduategrad
• a white crystalline double sulfate of aluminum: the potassium double sulfate of aluminum
  Synonym:potassium alumpotash alum
• a white crystalline double sulfate of aluminum: the ammonium double sulfate of aluminum
  Synonym:ammonia alumammonium alum

双语例句

• The main mineral resources in the territory there is iron ore, potash feldspar, sodium feldspar, limestone, quartz stone, phosphate rock, aluminum alum with disabilities, go home and so on.
  境内矿产资源主要有铁矿石、钾长石、钠长石、石灰石、石英石、磷矿石、铝矾士、去母等。
• Blue vitriol, ie copper sulphate Alum will settle turbid water.
  胆矾（五水硫酸铜）.明矾可以澄清浊水。
• Ultimately, this alum left the company.
  最后，这位校友离开了那家公司。
• The water purification technology by two grade direct ceramic particle filtration automatic alum feeding-micro flocculation is used to treat the low turbidity water in Zhongxin, Zengcheng, China.
  采用自动投矾-微絮两级陶粒直接过滤净水工艺，对增城中新低浊水源水进行试验。
• Sedimentation: after the addition of coagulant and the mixture reaction, colloid impurities in water coagulate into larger alum grains, which are further removed from the sedimentation tank.
  沉淀：原水加混凝剂后，经过混合反应，水中胶体杂质凝聚成较大的矾花颗粒，进一步在沉淀池中去除。
• Determination of Pb in Edible Potassium Alum by the Stabilized Temperature Platform Furnace AAS
  等温平台石墨炉原子吸收法测定食用明矾中的铅
• Ethyl decanoate was synthesized from capric acid and ethanol by using ferric potassium alum as catalyst.
  以铁钾矾为催化剂，通过葵酸与乙醇反应合成了癸酸乙酯。
• Objective: To explore the bacteriostatic effect of alum and dried alum in vitro.
  目的：探讨白矾及枯矾体外抑菌作用。
• When the dyeing liquid containing sodium sulfate, alum, lime and iron salts, etc., must be added chelating agent.
  当印染液中含有硫酸钠、明矾、石灰和铁盐等，必须加入螯合剂。
• Drop a little alum into the water and you can see to the bottom.
  一把明矾放下去，就看见了底。