氟化

At 500°-600° it is attacked strongly, with formation of the tetrafluoride.

在500℃-600 ·它的攻击强劲，形成的氟化。

Gas, which is carbon tetrafluoride, generating less polymers is charged while etching the oxide layer.

所述产生聚合物较少的气体为四氟化碳。

Etching the low dielectric constant film includes exposing the substrate to carbon tetrafluoride, oxygen, nitrogen, and argon.

对低介电常数膜进行刻蚀包括使衬底暴露于四氟化碳、氧气、氮气和氩。

Its specific procedures are :first to treat the sample with hydrofluoric acid to convert the silica into a gas of silicon tetrafluoride to escape, and then at a PH value of 4 to 5 to treat the residual liquid with hydroxylamine hydrochloride to get the ferric ions reduced to ferrous ions.

其具体步骤为：首先用氢氟酸处理试样，使沉淀法白炭黑转化成四氟化硅气体逸出。

Low-quality fluorite mine ; prepare ; cryolite ; silicon tetrafluoride

低品位萤石矿；制备；冰晶石；四氟化硅

The results show that the optimum catalysts for the Michael addition and the nitroreduction were tetrabutylammoniumfioride and titanium trichloride, and the yields of the addition product and the reduction product were 54% and 78%, respectively.

结果表明，Michael加成反应和硝基还原反应的最佳催化剂分别是氟化四丁基铵和三氯化钛，在二者催化作用下所得加成产物和还原产物的收率分别为54%和78%。

A space or line of the staff.lined with boron or filled with boron trifluoride gas.

有具线纹的硼或充满三氟化硼气体的小室。

Nitrogen trifluoride (NF3) is a toxic, colorless, odorless , nonflammable, oxidizing compressed gas.

三氟化氮(NF3)是有毒、无色、无嗅、不可燃的氧化性压缩气体。

It is used to some extent in pharmaceutical industry (used as special catalyst to produce antibiotics) and chemical industry, esp. in production of cephalosporin (whose effect is better than boron trifluoride ethyl ether complex compound), and also used for most advanced science, such as abstraction of fuel with high energy and of isotope B10 as well as chemical reagent.

在制药工业(在医药上作为生产抗生素的专用催化剂)、化学工业等行业中都有不同程度的使用，尤其在头孢抗菌药类，效果优于三氟化硼乙醚络合物，亦用于尖端科学，如高能燃料的提取及提取同位素B10，也可用作化学试剂

It was shown from the results that emulsifier TP-Ⅴ which was prepared by PEG 4000 reacted with TME, in the molar ratio of TME to PEG 2:1, at about 110℃ for 1 h, catalyzed by boron trifluoride diethyl etherate, has a very good emulsifying impact for TME. Particle size distribution of the emulsion was homo-geneous and viscosity of the emulsion was small.

实验结果表明，以M相对适中的PEG4000与TME按物质的量比2： 1、在催化剂三氟化硼乙醚作用下、110℃左右反应1h合成的乳化剂TP-Ⅴ，对萜烯基环氧树脂具有很好的乳化效果，制备的乳液粒子粒径均一度较高，乳液表观黏度较小。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。