source bed源层sourcen.来源；发源地；原始资料v.从...获得Source program maintenance源程序维护source-indicating sememe源义素Source Selection Authority来源选择权限source to surface distance(辐射治疗)源面间距source-based RFID system有源RFID系统sources and uses statement[经] 资金来源和运用表source of endless troubles后患无穷source-and-sink method源壑法Source-controlled theory源控论source self-bias circuit源自偏置电路