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)測器，它對天然中子本底的計數(shù)率約每分鐘20次計數(shù)。
返回 background counting rate