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简要描述了北京谱议(BES)主漂移室 (MDC )的结构设计、建造过程、丝的张力测量、丝的高压漏电流测量、宇宙线信号测试等。给出了各项指标的实验值。
The structure design, construction process, wire tension measurement, wire high voltage leakage current measurement, cosmic ray signal test and so on of BES main drift chamber (MDC) are briefly described. The experimental values of each index are given.