Assertion: led | /r/CapableOf | maintain its light emitable time
Facets:
Source sentences:
text: However, there are still many usable fluorescent powder such as ZnS series, among those the oxide powder is stablest, its withstanding temperature may reach 200° C. and does not fade for long serving so as to allow the LED to maintain its light emitable time longer than 50,000 hours.