FRET即荧光能量共振转移(fluorescence resonance energy transfer,)是较早发展起来的一门技术，而荧光能量共振转移现象是20世纪初发现的，随着绿色荧光蛋白应用技术的发展，FRET已经成为检测活体中生物大分子纳米级距离和纳米级距离变化的有力工具，在生物大分子相互作用分析、细胞生理研究、免疫分析等方面有着广泛的应用。
[ 复数 frets 第三人称单数 frets 现在分词 fretting 过去式 fretted 过去分词 fretted ]
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同义词： worn spot
"there was a simple fret at the top of the walls"
"don't fret over these small details"
"fret a guitar"
同义词： eat away
以上来源于: WordNet
V-T/V-I If you fret about something, you worry about it. 担心
I was working all hours and constantly fretting about everyone else's problems.
我一刻不停地工作着，还一直担心着其他人的问题。
But congressional staffers fret that the project will eventually cost billions more.
但国会的工作人员们担心这个方案最终会多花几十亿。
N-COUNT The frets on a musical instrument such as a guitar are the raised lines across its neck. (吉他等弦乐器指板上定音的) 音品
N a repetitive geometrical figure, esp one used as an ornamental border 回纹饰
N sea fret的缩写 → short for sea fret
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