subscribern.签署者；捐献者；订户subscribevt.订阅；签名；支持；捐赠；同意subscriber line netwrok用户线路网subscribe capital stock认购股本subscriber rs facsimile用户传真subscriber loop coupler用户环路耦合器subscriber line circuit用户线路subscriber traffic rate用户通话率subscriber control block用户控制块subscriber service class用户服务类subscriber's uniselectorsubscriber private meter用户专用计次表