氟化

Perfluoroguanidine can be prepared by the direct fluorination of dry ammeline with 5% fluorine at about-16℃.

全氟胍可以由干的三聚氰酰胺，用5％的氟，在约－16℃直接进行氟化而制得。

Phosphate fertilizer production;fluorinated gas;comprehensive utilization;barium fluosilicate;barium fluoride

中图分类号：TQ124.31；132.35 文献标识码：A 文章编号：1006-4990(2009)02-0041-02磷肥生产；含氟气体；综合利用；氟硅酸钡；氟化钡

An abnormal condition caused by excessive intake of fluorine, as from fluoridated drinking water, characterized chiefly by mottling of the teeth.

氟中毒由于过量摄入氟而导致牙齿产生色斑的不正常状况，如饮用氟化的水

Any Party included in Annex I may use 200x as its base year for nitrogen trifluoride, hydrofluoroethers and perfluoropolyethers for the purposes of the calculation referred to in paragraph x above.

附件一所列任一缔约方，为以上第x款所指计算的目的，可使用200x年作为其三氟化氮、氢氟醚和全氟聚醚的基准年。

The company has registered trademarks as Yingzi,main products of which are as follows: hydrofluoric acid,fluo-refrigerant and its substitute,technical fluorinated salts,chemical reagents containing fluorine,Halon 1211 extinguishant and its substitute,etc.,totally containing seven types and over a hundred of varieties.

公司产品注册商标&莹字&牌，主要产品有氢氟酸、氟致冷剂及其替代品、哈龙1211灭火剂及其替代品、工业氟化盐、含氟化学试剂等。

A process of preparing phosphorus pentafluoride was put forward: first, mesneproduct was prepared from phosphorus pentoxide and anhydrous hydrogen fluoride; second, phosphorus pentafluoride was acquired after dealing with the hexafluorophosphoric acid.

本文以五氧化二磷和无水氟化氢为原料，首先制备中间产物六氟磷酸，再通过对六氟磷酸进行处理以生产五氟化磷。

There was no difference in the occurrence of fluorotic tooth and the density of bone trabecula between the rat groups of brick tea induced fluorosis and sodium fluorides.

高硒可以降低氟化钠组大鼠的血氟浓度，但不能明显减轻大鼠氟中毒的病理损伤。

CrO-Y2O3catalysts were prepared by a deposition-precipitation method and tested by fluorinating 2-chloro-1,1,1-trifleuoroethane (HCFC-133a) to synthesize 1,1,1,2-tetrafluoroethane (HFC-134a).

用沉积－沉淀法制备了CrO-Y2O3催化剂，考察焙烧气氛及温度对1，1，1-三氟－2-氯乙烷(HCFC-133a)气相氟化合成1，1，1，2-四氟乙烷(HFC-134a)催化性能的影响。

Of,relating to,or being one of the pointed conical teeth located between the incisors and the first bicuspids.

氟中毒由于过量摄入氟而导致牙齿产生色斑的不正常状况，如饮用氟化的水

Teflon: Trademark for a polymer of tetrafluoroethylene fluorocarbon.

铁氟龙：四氟乙烯或氟化的乙烯－丙烯的聚合物的商标名。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐