常見例句

雙語例句

• A high sensitive neutron monitor is described in this paper. It has an approximate counting rate of 20 cpm for natural background neutrons.
  本文介紹了一種高靈敏度中子監(jiān)測(cè)器，它對(duì)天然中子本底的計(jì)數(shù)率約每分鐘20次計(jì)數(shù)。
返回 background counting rate