A.平板 B.電子元件 C.玻璃 D.銅
A.0.020~0.100 B.0.080~0.100 C.0.120~0.200 D.0.200~0.300
A.0.003~0.005 B.0.006~0.008 C.0.007~0.010 D.0.008~0.010