短语词组短語cabling pay -off 成纜放裝置pay -off spool 放線磐rotating pay -off 鏇轉放線裝置stationary pay -off 固定放線裝置mobile pay -off 移動式放線裝置drumpack pay -off 筒式放線裝置stempack pay -off 圈式放線裝置;綑式放線裝置payoff function 支付函數 返回 pay off