A.K=R 0 /dB.K=d/R 0C.K=⊿t/R 0D.K=1/R 0 A、K=R 0 /dB、K=d/R 0C、K=⊿t/R 0D、K=1/R 0 发布时间:2025-10-04 05:08:30