The causes of HF corrosion were analyzed. The corrosion problem was solved after the application of electroless of Ni-P plating in the alkylation unit.

The HP 4500 ICP-MS analysis of trace impurities in concentrated hydrofluoric acid used in semiconductor production was described.

研究了用HP4500型ICP-MS方法分析半导体用浓氢氟酸中的痕量杂质。

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A basic model of sacrificial layer-phosphosilicate-glass ( PSG) etching was introduced, and Power law model was elucidated in details.

介绍了在硅微机械加工的牺牲层释放中，氢氟酸（HF）腐蚀磷硅玻璃（PSG）模型的建立过程，详细阐述了Power Law模型。

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A new type filler, PTFE ladder Rasching ring is designed and used in the washing tower of anhydrous hydrofluoric acid equipment, properties of this filler is also analyzed.

设计了1种新型填料―PTFE阶梯拉西环并应用在无水氢氟酸装置的洗涤塔中，分析了该填料的特性。

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High purity spherical-normal spherical submicron crystal silica is prepared by using technique of mixing acid corrosion ( anhydrofluoric acid and sulphuric acid) and method of mechanical stir from raw powder quartz.

以天然粉石英为基本原料，通过氢氟酸与盐酸混合酸溶蚀技术和机械强力搅拌处理，制备了高纯球形-准球形亚微米晶质SiO2材料。

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Wet etching of dry thermal SiO_2 with buffered hydrofluoride acid

干氧SiO2的氢氟酸缓冲腐蚀研究

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A method for the determination of trace As in coal by microwave digestion and hydride generation ICP-AES has been reported. The digestion system of HNO_ ( 3)-HCl-HF was evaluated.

建立了硝酸盐酸氢氟酸微波消解样品，氢化物发生ICP AES法测定煤中痕量砷的方法。

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Effect of HF Treatment on the Charge Storage Properties of PP and PET Film and Their Charge Dynamic Characteristics

氢氟酸处理对PP和PET储电性的影响及其电荷动态特性

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The FeSO_4 obtained by reduction is purified, adding to NH_4OH-NH_4HCO_3 solution containing organic additives, precipitated and finally washed and then calcined at 900 ℃ for 2 hours. The calcined product is washed using dilute nitric acid and hydrofluoric acid, obtaining high-purity α-Fe_2O_3.

还原后得到的硫酸亚铁经过净化除杂，滴加到含有适量有机添加剂的沉淀剂NH4OH-NH4HCO3中，沉淀洗涤干燥后900℃煅烧2h，煅烧产品再用稀硝酸和氢氟酸洗涤，得到高纯球形-αFe2O3。

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A modified model for porous silicon formation is proposed and computer simulation has been carried out based on the dependence of the porous silicon microstructure on anodic current and HF concentration during porous silicon formation.

基于多孔硅生长过程中阳极化电流，氢氟酸（HF）含量与多孔硅微结构的关系，提出一个改进的多孔硅生长模型，并进行了计算机模拟。

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Boron convert into BF4~ with concentrated hydrofluoric acid in advance.

预先用浓氢氟酸将硼转化成氟硼酸根，然后在pH4用氟硼酸根离子选择电极进行测量。

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After etching by hydrofluoric acid, PAA hollow microspheres were obtained.

经氢氟酸刻蚀后得到含偶氮苯的PAA中空微球。

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Synthesis of ETBE catalyzed by HF modified USY zeolites

氢氟酸改性USY分子筛催化合成乙基叔丁基醚的研究

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The purity of c – Si3N4 reached 100% after the recovered samples were treated with hydrofluoric acid at 440 K for 9 ― 10 h.

回收样品在440K左右经9～10h与氢氟酸反应处理后，c–Si3N4粉体的纯度接近100%。

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Construction of F Class Corrosion Pipeline in HF Alkylation Unit

氢氟酸烷基化装置F级腐蚀性管道施工

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It has been indicated by TSD current spectra that the charge stability of the chemically treated PP films by extraction, oxidation, and HF solution is significantly improved while that of the HF-treated PET films becomes bad.

开路TSD电流谱的研究结果表明，经萃取、氧化和氢氟酸处理的PP孔洞膜的电荷稳定性得到显著的提高，而氢氟酸处理的PET膜的电荷稳定性较原膜显著地降低。

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Fungi aren't animals either, but for what it's worth, some scientists consider them more akin to animals than plants.

真菌也不属于动物的一类，但是比较起来，真菌更类似于动物。

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And for what it's worth, she wasn't exactly forgiving, so... at least now I can move on.

虽然她没有原谅我但无论如何至少我能放下担子好好生活了

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For what it's worth, the data suggest that some countries like Japan and Finland, see table can eschew selection and still thrive.

不过统计学数据还是有用处的，比如它让我们知道，有些国家（如日本、芬兰，见表）无须“重点培养尖子生”，孩子们也照样茁壮成长。

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The Delphic story for what it's worth marks a major turning point in Socrates'intellectual biography.

德尔菲神谕事件，不论好坏，都标志着，一个苏格拉底思想传记中的重要转折点。

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But for what it's worth, I don't in fact believe they're actually what's going to happen.

但不管真假，我不相信这就是会发生的事情。

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