氟是一种非金属化学元素,化学符号F,原子序数9。氟是卤族元素之一,属周期系ⅦA族,在元素周期表中位于第二周期。氟元素的单质是F2,它是一种淡黄色,有毒的气体。氟气的腐蚀性很强,化学性质极为活泼,是氧化性最强的物质之一,甚至可以和部分惰性气体在一定条件下反应。氟是特种塑料、橡胶和冷冻机(氟氯烷)中的关键元素。
拮氟锐对氟暴露工人排氟效果和对IL-2、IL-6血清浓度的影响 - 淘金者论文 关键词] 拮氟锐;氟;白细胞介素2;白细胞介素6 [gap=1133]Key words:Jiefurui;Fluoride; Interleukin-2; Interleukin-6
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聚四氟乙烯 PTFE ; [高分子] Polytetrafluoroethylene ; PTFE Polytetrafluoroethylene ; [高分子] Teflon
氟化钠 [无化] sodium fluoride ; NaF ; fluorol ; karidium
氢氟酸 [无化] hydrofluoric acid ; HF ; fluorhydric acid ; hydrogen chloride ; hydrofluoric acid
氟康唑 Fluconazole ; FCZ ; Diflucan ; FLU
氧氟沙星 OFLX ; OFX ; OFL
氟化物 [无化] fluoride ; fluoride ion ; PMSF ; PFCs
诺氟沙星 Norfloxacin ; NOR ; NFLX ; Noroxin
氟西汀 fluoxetine ; Prozac ; fluoxetine hydrochloride ; the HAMA
氟化锂 [无化] lithium fluoride ; LiF ; Lithium Acetate ; Lithiumfluorid
We also determined urinary fluoride content of the mother.
同时测定母体尿氟含量。
参考来源 - 地氟病区人牙胚成釉细胞的结构改变Fluorine is one of the necessary microelements of human. It is closely related with vital activity and metabolism of the tissue of tooth and bone of human.
氟是人体必需的微量元素之一,它与人体生命活动及牙齿、骨骼组织代谢密切相关。
参考来源 - 地方性氟中毒患者骨骼损害及淋巴细胞基因表达的研究It is possible to cut down the available free fluorine content in dark green tea soup by fluorine-redncing agents combined with proper technology.
揭示了运用降氟剂与工艺配合,以降低黑茶茶汤中游离氟含量是可能的。
参考来源 - 降低黑茶(Dark Green Tea)含氟量的研究——Ⅱ 降氟的方法及效果·2,447,543篇论文数据,部分数据来源于NoteExpress
同样的,如果我们观察二价的氟,它是每摩尔160焦。
Likewise, if we look at fluorine in its diatomic molecule, it is 160 kilojoules per mole.
如果你需要的话,你的牙医可以给你开更高浓度含氟凝胶,牙膏或漱口剂。
Your dentist can prescribe a stronger concentration of fluoride in a gel, toothpaste or rinse if you need it.
一些业内人士显然不想购买氟氯化碳替代品,因为后者的价格是氟氯化碳的5倍。
Some in the industry apparently do not want to pay for CFC substitutes, which can run five times the cost of CFC's.
And you see where the most electronegative elements are, and fluorine is the most electronegative of the active elements.
你找一下电子力最大的元素在哪,氟是活泼元素中,电子力最大的。
And, likewise, if we look at fluorine in its diatomic molecule, it is 160 kilojoules per mole.
一样的,如果我们观察二价的氟,它是每摩尔160焦。
So, for example, hydrogen or fluorine they'll never be in the middle, they'll always be on the end of a molecule.
比如,氢或者氟,永远不会在中间,它们总是会在分子中最边缘的位置。
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