A.100um B.200um C.500um D.800um
A.0-2% B.2-7% C.10-15% D.20-30%
A.0-100微應(yīng)變 B.100-500微應(yīng)變 C.500-1000微應(yīng)變 D.1000-2000微應(yīng)變