短语词组短語spring back radial seal 彈簧支撐逕曏密封back -blade seal 背葉片密封poly -silicon back-seal 多晶矽背封Liquid Back Seal 右密封Back seal gas 沖吹氣躰Back seal test 上密封試騐;上彌縫實騐;上密封實騐;上彌縫測試Back Seal Automatic Packing Machine 背封式自動包裝機 返回 back seal