minimum detectable level 最低探测水平
the minimum detectable level 最小检测限
lower than the detectable level 低于检出限
minimum detectable echo level 最小可检测回声级
minimum detectable activity level 最低可测活度水平
In other words, "there was no detectable level" of nicotine that was considered harmless, the researchers wrote.
换而言之，不存在尼古丁的“无法检测级别”以视为无害，研究人员如是说。
This project is based on the hypothesis that in some cases domain organization of proteins may be conserved even if some domain sequences diverged beyond detectable level of sequence similarity.
这个专题是根据一个理论：在某些例子中，即使功能区块的序列相似度在可以侦测的范围之外，蛋白质功能区块的结构可能会是保存的。
The concept relies on the fact that the ear not only senses sound but also makes noises of its own, albeit at a level only detectable by supersensitive microphones.
这一设想的依据是：人耳不仅只是感知声音，它自己也同时在发出声音，即使其强度只有超灵敏拾音器才能侦测到。
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