单词	lightfast
释义	lightfast /ˈlʌɪtfɑːst / adjective (Of a dye or pigment) not prone to discolour when exposed to light: colour it with a lightfast paint... The Bisphenol A bischloroformate is then reacted with another chemical to produce a lightfast epoxy resin. I was wondering if anyone knows whether its nupastels are lightfast or not. Need the right expert in lightfast dye? Derivatives lightfastness noun ... When you've painted all the colors you want to test for lightfastness, cut the sheet in half. If a pigment has good lightfastness, it does not always mean that it has good weatherfastness This pigment identification project and a lightfastness standard can only lead to the increased recognition of this fine art medium.
随便看	stovies stow stowage stow away stowaway Stowe, Harriet Beecher stow it! STP St Patrick's cabbage St Patrick's Purgatory St Paul St Paul's Cathedral St Paul's Epistle to the Corinthians St Paul's Epistle to the Galatians St. Peters St Peter's Basilica St Petersburg St Peter's fish St Philip St Pierre and Miquelon St Pölten STR Str. strabismal strabismic

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