查询词典 fluorine

Inside the source apply color to develop process in the tooth in formative of, such as four wreath vegetables deposition is in the tooth essence, will make tooth yellow, brown or dark gray, be called four wreaths plain tooths;If containing fluorine in the drinking water is excessive, may also cause fluorine spot tooth, the tooth noodles presents a white chalk color, the palm tree brown spot piece;If the tooth nerve is bad clay-cold, hemoglobin and germ resolve an outcome to combine to also make tooth black.

内源性着色是在牙齿发育过程中形成的，如四环素沉积在牙本质内，就会使得牙齿变成黄色、棕色或暗灰色，称为四环素牙；如果饮用水中含氟过多，也可能导致氟斑牙，牙面呈白粉笔色、棕褐色斑块；如果牙神经坏死后，血色素与细菌分解产物结合也可使牙齿变黑。

Fluorine turns a kind of salt is refine aluminium important and auxiliary material, main product melts aluminium for cryolite and fluorine.

氟化盐是炼铝的一种重要辅助材料，主要产品为冰晶石和氟化铝。

Satisfied the need of the research in preparation of fluorine by electrolyzation and the second-degree purifier further secured the whole operating system of the experiment besides purifying the fluorine gas.

实验研究表明：所研制的电解槽、化学冷却阱、吸收塔，防爆缓冲罐，尾气环保装置等设备设施可以满足本研究电解制氟的需要，且二级纯化装置不但具有纯化氟气的功效，而且还可对整个实验操作系统起到进一步的安全保障作用。

The clay used for coal combustions is the main fluorine source of the endemic fluorosis. In addition to occurring in apatite and hornblende, fluorine is closely related to the adsorption of illite and mixed-layer clay minerals of smectite and illite.

氟中毒的氟源主要来自拌煤黏土，氟在拌煤黏土中除了以磷灰石、角闪石形式存在外，与伊蒙混层矿物和伊利石的吸附密切相关。

Can provide a variety of O-ring materials, including nitrile, fluorine-containing rubber and fluorine rubber-wide.

可以提供多种 O 型圈材料，包括腈、含氟橡胶和全氟橡胶。

Fluorine content is mostly more than 800mg/kg in carbonaceous slate, black shale and phosphorite of Lower Cambrian, and is also high in carbonaceous slate of Lower Silurian (more than 1500mg/kg), which strata are the fluorine-rich zones in Daba Area.

这对研究我国山区和风化剥蚀地区氟的空间分布规律和地域差异及其与人类健康的关系，具有重要的理论和现实意义。

Soli ; water-soluble fluorine ; fluorine content ; relevant analysis ; simulated experiment ; influence factor

土壤；水溶性氟；氟含量；相关分析；模拟试验；影响因素

The research work consists of two aspects:the relationship between fluorine in coal and ash,mineral composition;organic affinity and washability of fluorine in coal.

研究内容包括：煤中氟与灰分、矿物成分之间的关系；煤中氟的有机亲和性与可选性；研究结果表明：煤中氟质量分数与灰分质量分数之间呈正相关关系；中国煤中氟质量分数与灰分之间存在以下指数增长关系；煤中氟质量分数与煤中矿物质的成分有关；煤中氟属"中等无机型"元素，无机亲和力较强，有机亲和力较弱；煤中氟以无机氟为主，有机氟为辅的方式赋存；原煤洗选是脱除煤中氟的一种可行的技术措施。

In order to study the migration and removal characteristics of fluorine and chlorine in Guizhou Shuicheng coal,regressive release flotation and float-sink tests were carried out,during which the fluorine and chlorine content in the washed coal products analyzed,while the washability of original coal samples assessed.

通过分步释放试验和浮沉试验对贵州水城煤样进行洗选，得到不同的洗选产品，并进行了可选性评定。对不同产品中氟和氯的含量进行分析，研究了洗选过程中氟和氯的迁移和脱除特性。

Methods Under the acid condition, fluorine could be separated by distillation, then fluorine is absorbed by washing liquid. The electricity lead detection-ion chromatogram with Ionpac AS14 column was employed to determine the content of fluoride, 3.5 mmol/L of sodium carbonate-1.0 mmol/L of soda as the washing liquid at 1.2 ml/ mm.

氟在酸性条件下，蒸馏分离，蒸出的氟化氢被淋洗液吸收，采用电导检测－离子色谱仪和IonpacAS14色谱柱，3.5 mmol/L碳酸钠－1.0 mml/L碳酸氢钠为淋洗液，流量为1.2 ml/min，样品及标准系列在酸性条件下经水蒸气蒸馏－吸收，直接进样测定。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。