短語(yǔ)詞組短語(yǔ)back -feed oil seal 廻流油封back line feed 退行back feed factor 反餽因數(shù);反餽因子;反餽系數(shù)status back feed 狀態(tài)反餽back feed dog 後送佈牙Back feed offset 倒退位移 返回 back feed