研究了一种采用双向脉冲电源将铝合金阳极氧化膜在硫酸铝溶液中进行封闭的绿色工艺。
A new pulse sealing treatment, involving the use of an asymmetric pulse power supply to seal the anodic film on an al substrate immersed in a solution of aluminum sulfate, has been developed.
以马铃薯渣为原料，在微波条件下，用稀硫酸溶液萃取、硫酸铝沉淀提取果胶。
Using thin sulphuric acid as extraction reagent by microwave radiation, extracting pectin is precipitated by aluminum sulfate from potato dregs.
理想的牙龈收缩试剂包括氢氧化铝氯化物，硫酸铝或硫酸铁溶液。
Suitable retraction agents include aluminium hydroxide chloride, aluminium sulfate or ferric sulfate solutions.
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