氟

The map of LISA of the prevalence rate of dental fluorosis and the concentration of fluoride in drinking water show that most situations are much alike between the geographically adjacent locations if their terrains are alike.

另外，Moran LISA的专题地图中的&热点&表明这个地区与其周边地区的氟中毒情况很接近；&冷点&则表明这个地区与其周边地区的氟中毒情况不接近，可用于探索疾病病因或危险因素。

In the 11 cases with focal hyperinsulinism, the technique was 100 percent accurate in pinpointing the abnormal lesions.

通过使用一种名为18氟-左旋多巴或18氟-多巴的非刺激性的放射性物质，研究者在24例患儿中精确的诊断出23例局部或弥散型高胰岛素症，准确度达96%。

This research was based on mechanism that organic material has reconditions action on soil pollution. We chose yellow soil and calcareous soil in Guizhou province, peat coal and gentle breeze coal were added into simulated high fluorine polluted soil to study the effect of organic material on soil soluble fluorine content using the qualified design.

试验选用典型贵州黄壤和石灰土，运用有机质进行土壤污染修复的机理，通过向模拟高氟污染土壤中添加有机物料泥炭和风化煤，采用两因素最优设计，研究两种有机物料对土壤中水溶性氟含量的影响。

TDS PTFE product includes sheet, Tube Rod and gaskets etc., they are molded, skived or cut from 100% virgin PTFE.

天盾密封四氟制品由100%的纯四氟原料经模压或车削等工艺精制而成。

The similar nicotinoyltrifluoroacetones are synthesized from acetylpyridine and ethyl trifluoroacetate through Claisen reaction.The influnences of alcoholic natrium,reaction temperature and solvent on reaction yield is studied.The subliming method is improved.

本文以乙酰吡啶和三氟乙酸乙酯为主要原料，利用克莱森酯缩合反应，合成了三种相似结构的吡啶甲酰三氟丙酮化合物，考察了碱性试剂醇钠、反应温度和溶剂等因素对反应产率的影响，改进了纯化产物的方法。

The B, C, D group each mouse right armpit department hypodermic vaccinates the H22 lump cell to hang fluid 0.2ml, after vaccinating 24h weighing, and starts the abdominal cavity injection to give the medicine: A, B group uses physiological saline 0.2ml/only (continuously to give medicine 14 days) every day, C group with 5 fluorine uracil mg/day, dilutes the density is mg/0.2ml (the 1~5th day for medicine), D group will put down with the physiological saline disappears the hitch to compound mg/only (continuously to give medicine 14 days).

依据随机化原则，将40只ICR雌性小鼠随机分为四组，分别为空白对照组，荷瘤对照组，5氟尿嘧啶组，平消栓组。B，C，D组每只小鼠右腋部皮下接种H22瘤细胞悬液0.2ml，接种24h后称重，并开始腹腔注射给药：A，B组每日用生理盐水0.2ml/只（连续给药14天），C组用5氟尿嘧啶25mg/kg（第1~5天给药），D组用生理盐水将平消栓配制成1.0g/kg（连续给药14天）。

In a definite vacuum, the phosphate acid temperature was determined by phosphoric acid concentration.

通过对真空降膜浓缩磷酸脱氟实验表明，操作温度对磷酸的浓缩和深度脱氟效果有显著影响。

A new method was developed for the determination of perfluorooctanesulfonate and perfluorooctanic acid in sewage sludge samples.

采用固相萃取/高效液相/四极杆飞行时间串联质谱检测活性污泥中的全氟辛烷磺酸及全氟辛酸。

A new production process is proposed,in which the acid sludge is removed and the pickling liquor is neutralized once with lime milk after defluorination .

工业试验结果表明，新工艺能使磷矿石中磷的利用率由现有工艺的近60%提高到85%以上，脱氟液中磷氟质量比由240左右提高到300以上，产品收率提高20%以上，产品质量也大大提升，并显著降低了原料消耗及生产成本。

Summarize: XGN15-12 is a new metal-enclosed switchgear which whole air-insulated is assembly composed with SF6 loading switch as the main switch ,suitable for auto-electric-power distribution , both compacted and extensible metal-enclosed switch equipments.

XGN15-12型户内交流高压六氟化硫环网开关设备是新一代以六氟化硫负荷开关作为主开关而整柜采用空气绝缘的，适用于配电自动化的、既紧凑又可扩充的金属封闭开关设备。

The basic concept of FOP can be summarized as to further optimize effective prescription according to the standard of curative effects and with the aid of modern science and technology and theories of traditional Chinese medicine.

其基本内涵可概括为：以确有疗效的中药复方为研究对象，以现代科学技术和传统中医药理论为技术支持，以该复方所治病证的药效响应为评价标准，以优化重组疗效更优的新复方为研究目的。

Ever since our world has been a world, native forests have been indiscriminately exploited by man.

自从我们的世界一直是世界原生森林被任意剥削人。