A.氧化鋯 B.HCl溶液 C.電石 D.NaCl
A.±(0%~2%) B.±(7%~%) C.±(5%~7%) D.±(3%~5%)
A.600°C~700°C B.700°C~800°C C.800°C~850°C D.850°C~900°C