Especially , thepresence of Sn in TiO _ 2 - SnO 2 - SiO 2 catalyst promotered the selectivity to DPO.

经 Sn 改性后的复合型TiO_2-SnO2-SiO2催化剂,使DPO的选择性明显提高.

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The ash is mainly composed of SiO 2 , Al 2 O 3, CaO , CaSo 4, and etc.

灰渣的主要成分是SiO2 、 Al2O3 、 CaO 、CaSO4等.

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When SiO 2 content reach 4 %, the latex film get stability around 2.

当体系中SiO2含量达到4%以后, 涂膜光泽度在2左右趋于稳定.

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The distribution of vanadium between melt and CaOMgO _ ( sat ) - Fe _ tO - MnO - SiO _ 2 - V _ 2 O _ 5 - TiO _ 2 - Al _ 2 O _ 3 slag in BOF was studied by thermodynamics experiment.

通过热力学试验研究的方法研究了1600℃时含钒铁液与含钒转炉渣系CaO-MgOsat-FetO-MnO-SiO2-V2O5-TiO2-Al2O3间钒的分配平衡.

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Under certain condition, methane can reacts with SiO _ 2 or high vacuum grease, generating Mylar Polyster.

SiO2作掩模时,在一定的条件下, CH4会与SiO2或者真空硅脂发生反应, 生成聚脂薄膜.

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The crystallization of three K 2 O - B 2 O 3 - SiO 2 glasses has been studied by using DTA, XRD 、 TEM and SEM technique.

本文利用DTA 、 XRD、TEM、SEM等技术研究了三种K2O-B2O3-SiO2玻璃的析晶性能.

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Another is graft on surface , in which methyl methacrylate was introduced to clad nano - SiO 2.

二是表面接枝法,使用甲基丙烯酸甲酯包覆 纳米 SiO2.

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The absorption edge of the AgI - SiO _ 2 composites is different from both pure constituents.

AgI-SiO2复合体系的光谱吸收边与纯AgI及纯SiO2不同.

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Nitrogen incorporation into SiO 2 gained a bit of electrical performance starting at the 130 - nm node.

在SiO2中加入氮又使CMOS电路在130nm节点获得了少量电气性能的改进.

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However, the biosilica obtained by the dry ashing method from rice shells directly is cristobalite silica.

而利用干灰化法从稻壳中直接提取的硅质体是方晶石型的SiO2材料.

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A foam ceramics of Al 2 TiO 5? TiO 2 ? SiO 2 doped with CeO 2 and Er 2 O 3 was prepared by organic foam soaking.

用有机先驱体浸渍法制备了CeO2和Er2O3等稀土掺杂的Al2TiO5? TiO2? SiO2多相泡沫陶瓷.

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High properties transparent Si 3 N 4 - BN - SiO 2 ceramic composites with Si - B - O - N based were prepared by gas pressure sintering ( GPS ).

本研究选择 Si3N4 -BN-SiO2体系,通过气氛压力烧结工艺 ( GasPressure Sintering,GPS ) 研制了耐高温、抗冲刷Si-B-O-N系陶瓷透波材料.

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