permanent layer的相關(guān)資料：
臨近單詞
permanent dye
permanent
permanent postoperative sequelae
permanent fire-retardant rayon
permanent type production packer
permanent- magnet synchro motor
permanent magnet sychronous motor
Permanent magnet equivalent model
Permanent Disability Rating Board
permanent magnet linear generator
permanent field synchronous motor
Permanent magnet type of retarder
