短語詞組短語line keystone correction 掃描線梯形校正furnace keystone correction 掃描線梯形校正Optical keystone correction 光學(xué)梯形矯正vertical keystone correction [電]垂直梯形校正field keystone correction 場梯形畸變校正horizontal keystone correction 水平梯形畸變校正Digital keystone correction 數(shù)碼梯形校正Corner Keystone Correction 正功能horizontal interlaced image keystone correction 水平梯形畸變校正 返回 keystone correction