基本解释[物理学]本底计数率英汉例句双语例句A high sensitive neutron monitor is described in this paper. It has an approximate counting rate of 20 cpm for natural background neutrons.本文介绍了一种高灵敏度中子监测器，它对天然中子本底的计数率约每分钟20次计数。background counting rate更多例句词组短语短语background d counting rate 本底计数率background counting rate更多词组专业释义物理学本底计数率