external ann外臂externaladj.外来的；外部的；外面的；表面的n.外观；外部；外界事物external channel program外部通道程序external loop diagnostic外环特性external feedback signal外部反馈信号,外反馈信号external tissue extender皮肤牵张带external heating surface外受热面external synchronization外同步external pressure sphere外压球壳external-device status外部设备状态external border of tibia胫骨外侧面external video interface外部声频接口, 外部视频接口