As the micro holes are in small size and in a plurality-quantity, the isopropylacetone air cannot flow out and the atmosphere air can be protected.
由于微孔很小且很多，所以，异丙酮气体不会溢散出来，保护周围的空气；
2
The results showed that if appropriate mobile phase was chosen, the adoption of acetone, ethanol and isopropyl alcohol as organic agents for melamine extraction could also got good results.