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培训维修技术员，关于产品概念，原理和电路图。
Train repair technician on product concept, theory, circuit diagram.
youdao
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培养训练维修技术员，有关产物观点，道理和电路图。
Train repair technician on product concept, theory, circuit diagram.
youdao
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培养训练维修技术员，有关产物观点，道理和电路图。
Train repair technician on product concept, theory, circuit diagram.
youdao