no detection中文什么意思

未检出

• no:    no. ＝number.
• detection:    n. 1.探知；发现，发觉；败露。 ...
• on detection of:    一察觉到; 一侦测到

例句与用法

1. Although diamonds have been extensively searched for , there was no detection
   虽然天文学家其后展开全面的搜寻，但是却徒劳无功。