英语词汇“upf”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	upf
释义	UPF abbreviation ultraviolet protection factor: the effectiveness of clothing fabrics in protecting the skin from the sun’s ultraviolet UVA and UVB radiation, rated on a scale of increasing protectiveness, the number being the ratio of the radiation dose needed to produce minimal redness when wearing the fabric compared to the dose needed to produce the same redness when not wearing it: A shirt with a UPF of 50 will reduce your ultraviolet exposure by 50 times (98% UV blockage). Compare SPF. Origin of UPF First recorded in 1985–90 Words nearby UPF updo, updraft, updraught, updrift, upend, UPF, upfold, up for grabs, up-front, upgather, upgrade Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020
随便看	root canal therapy rootcap root caries index root cellar root climber root crop root division root doctor rooted rooted to the spot rooter root filament root for root ginger root graft root hair roothold rooting compound rooting reflex rootkit root knot rootle rootless rootlet root mean square

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UPF