A.風(fēng)冷卻 B.水冷卻 C.油冷卻 D.氟利昂冷卻
A.5-10% B.10-20% C.20-30% D.30-40%
A.40-50KV/mm B.50-60KV/mm C.60-70KV/mm D.70-80KV/mm