The function, the structure and the cosmic ray test of the outer drift chamber for PEP-4 Experiment at SLAC are described.
本文描述了在美国SLAC的PEP-4实验中使用的大型外圆柱漂移室的作用、结构、宇宙线测试方法及其结果。
The structure of the BES main drift chamber and arrangement of cosmic ray tests have been described briefly. The main test results of the chamber performance have been given.
简要描述了北京谱仪(BES)主漂移室的结构和宇宙线实验安排，给出利用宇宙线测试主漂移室性能的主要结果。
The structure of the BES main drift chamber and arrangement of cosmic ray tests have been described briefly. The main test results of the chamber performance have been given.
简要描述了北京谱仪(BES)主漂移室的结构和宇宙线实验安排，给出利用宇宙线测试主漂移室性能的主要结果。
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