A.聲束偏離B.探頭雙峰C.斜楔磨損D.電源損壞
A.普通試塊B.標(biāo)準(zhǔn)試塊C.對(duì)比試塊D.專用試塊
A.CSK-1A試塊B.SH-1型半圓試塊C.CS-1-5試塊D.WGT-3試塊