collectors集合管collectorn.收集家；收税员；收取款项的人；收集器collector breakdown voltage集电极穿电压collector-modulation tube集电极调制管collector cut-off current集电极截止电流collector head spring system弓头弹簧collector-catching network集电-捕捉网络collector lens focusing knob聚光透镜调焦旋钮collector modulation circuit集电极调制电路collector of copper sulfides铜捕收剂collector saturation voltage集电极饱和电压collector saturation current集电极饱和电流