免费成人A片免费看|亚洲有码视频在线观看|美女毛片视频激情超碰|91精品国产欧美一区二区成人|久久无码精品一级A片一高潮不断|亚洲性爰专区三级片不卡免费|欧洲另类AV无码国产免费看|免费观看黄片视频|三级黄色网片在线|国产精品一区二区三区网址

單詞乎

niacin

音標(biāo)['naiəsin]
niacin是什么意思、niacin怎么讀

niacin漢語(yǔ)翻譯

n. * 酸
【化】 煙酸
【醫(yī)】 煙酸

niacin英語(yǔ)解釋

名詞 niacin:

  1. a B vitamin essential for the normal function of the nervous system and the gastrointestinal tract
    同義詞:nicotinic acid

niacin詳細(xì)解釋

ni.a.cin

n.(名詞)
A white crystalline acid, C5H 4NCOOH, that is a component of the vitamin B complex found in meat, wheat germ, dairy products, and yeast and is used to treat and prevent pellagra. Also called nicotinic acid
煙酸,尼克酸:一種白色結(jié)晶酸,C5H 4NCOOH,是在肉、麥胚、奶制品和酵母中發(fā)現(xiàn)的合成維他命B的一種成分 也作 nicotinic acid

來(lái)源:
ni(cotinic) ac(id)
ni(cotinic) ac(id)
-in
-in

0
糾錯(cuò)