| 单词 | phosphorescence | 
| 释义 | Word Frequency phosphorescence(ˌfɒsfəˈrɛsəns) noun 1.  physics a.  a fluorescence that persists after the bombarding radiation producing it has stopped  b.  a fluorescence for which the average lifetime of the excited atoms is greater than 10–8 seconds 2.  the light emitted in phosphorescence 3.  the emission of light during a chemical reaction, such as bioluminescence, in which insufficient heat is evolved to cause fluorescence   Compare fluorescence  | 
	
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