fluorine ['flu(:)əri:n]
- fluorine的基本解释
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n.
氟
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Fluorine is one of crucial chemical elements to human health and can be tested in almost every parts of a healthy human body. Overloading of fluorine may cause dental and/or skeletal fluorosis, while in fluorine deficiency areas, fluoride drinking water supply or other methods of fluoridation may greatly reduce the ratio of dental caries of local residents. Researches on relation between fluorine concentration in drinking water and the ratio of human dental caries as well as the evaluation on efficacy of drinking water fluoridation have been lasted for 6 decades.
中文题名中国部分城市和地区居民饮用水氟含量与口腔健康相关性研究副题名外文题名 A research on relation between fluorine concentration in drinking water and residents' dental health of some cities and areas in China 论文作者王滨滨导师郑宝山学科专业地球化学研究领域\研究方向学位级别博士学位授予单位中国科学院地球化学研究所学位授予日期2003 论文页码总数103页关键词饮用水口腔健康氟中毒龋病饮用水馆藏号BSLW /2003 /R123 /3 氟是人体必需的微量元素之一,正常人体各组织和器官都含有氟。
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This thesis has systematically studies the microstructure of the sinter bearing fluorine of different compositions and in different sintering condition.(1) The main units of the Low Fluorine Sinter are magnetite、hematite、 SFCA、larnite、glass and pore. The cuspidine doesn't form for the low content fluorine, and the fluorine is in glass; Sinter basicity dominates the forming of the larnite and SFCA, when basicity is between 1. 72 and 1. 96, there are more larnites in the binder phase, and when the basicity is biger than 1. 96, there are more SFCA in the binder phase; the hematite appears like magnetite and usually is around pore.
为此,本文对不同组成、不同烧结条件的烧结矿样品进行了系统的显微分析和研究,其主要内容包括:(1)构成低氟烧结矿的主要组元有磁铁矿、赤铁矿、铁酸钙、硅酸二钙、玻璃体和气孔,由于含氟量的降低,枪晶石等含氟矿物并未形成,氟分布在后期凝固的玻璃体中,其中硅酸二钙和铁酸钙受碱度影响较大,硅酸二钙在碱度为1.72~1.96范围内形成较多,铁酸钙在碱度大于1.96含量增多,赤铁矿呈磁铁矿假象,多分布在气孔周围,各组元的生成顺序为:磁铁矿—硅酸二钙—铁酸钙—玻璃体。
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In previous reasearches,importance was attached to the damage of skeletal tissue induced by fluorine.But with fluoride's extensive application,recent researches pay more attentions to non-skeletal toxicity of fluorine,especially to male reproductive toxicity of fluorine.
近年来,随着氟及其化合物的广泛应用,使得人们越来越多地暴露于高氟环境中,过量的氟对机体非骨相组织的损害,特别是对生殖系统的损害作用,日益受到人们的重视。
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fluorine:氟
FlourocarbonLine其实不应该被叫成碳纤线,因为它是由内含化学元素"氟"(Fluorine)和"碳"(Carbon)的树脂(Resin)抽制而成的线体,跟前述的"碳纤维"完全风马牛不相及,所以应该叫成氟碳线或氟碳树脂线才恰当.
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fluorine:(一一七) 氟
(一一 ) 氟化物 Fluorides | (一一七) 氟 Fluorine | (一一八) 氟三氯甲烷 Fluorotri-chloromethane
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fluorine:氟的测定
32 硫化物 Sulphide content | 33 氟的测定 fluorine | 34 游离氧化钙 Free calcium oxide
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fluorine:氟 合格
10. Nitric acid-related nitrogen (HNO3)硝酸 合格 | 11. Fluorine 氟 合格 | 12. A carbon tetrachloride 四氯化碳 合格
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fluorine plastic:氟塑料
fluorescent penetrant festing method,荧光渗透探伤法 | fluorine plastic,氟塑料 | flutter,颤振
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