source bed源层sourcen.来源；发源地；原始资料v.从...获得Source drinking water area饮用水源地source of blood and essence关元source language insturction源语言指令Source/drain engineering源／漏工程source exploring of culture文化探源Source degenerated resistor源极负反馈电阻source text and target text原作与译作source service access point源服务访问点source/object code ratio源码目标码比Source Selection Evaluation来源选择鉴定