词汇	滤垢
释义	滤垢 fouling
随便看	black-letter type blacklevel black level black-level black level alignment black-level alignment black level clamp black level clamping black level constancy black-level constancy black level control black-level control black-level correction black-level errors black-level period black-level reference black level restoration black-level restoring circuit black-level saturation black level setting black level setting circuit black-level setting circuit black level shift black-level shift black level signal