The authers compared six used criterions ofinflucencing homogeneity of moving airflow in virtue of er-rors such as variance Q,average square deviation T,homoge-
The crystallization process of STS glass-ce-ramics was carried out in a constant temperature.The glass-ceramics still show good piezoelectric properties.The mec
In this paper, three linds of silicon carbide ceramic materials are chosen to perform the tests of material erosive wear. The relationship of ambient parameters