| 1. | From the results , it can be shown that the flaky crystal grains of this nano - sized material has small size , and the conjunction among them is loose , which can help gas be adsorbed and improve its performance 该wo3材料具有片状晶粒,粒径小,结构松散等特点,这些特点有利于气体的吸附,提高材料的气敏性能。 |