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1·The absolute fission rates was measured by the depleted uranium fission chamber.

用贫化铀裂变室进行绝对裂变率测量。

2·Detailed descriptions of the fission neutron sources, the ionization chamber for fission fragment detection, the neutron detectors and the experimental arrangement are given.

描述了裂变源、微型裂变室、中子探测器、实验安排以及降低测量本底的措施。