查询词典 alumina

Secondary growth of silicalite-1-seeded industrial CuO-ZnO-Al2O3 in alkaline solution with silica and alumina source produced intergrown ZSM-5 zeolite shells. After the shells were changed into HZSM-5, we compared the catalytical performance of the core/shell composite catalyst with a non-core/shell structured composite catalyst with the same component.

铜锌铝催化剂（CuO-ZnO-Al2O3）是工业上制备二甲醚的良好催化剂，我们将其表面预先包覆纳米沸石silicalite-1晶种，水热环境下二次生长后吸收硅源、铝源后形成ZSM-5膜，转换成氢型后形成CuO-ZnO-Al2O3/HZSM-5的核/壳结构复合催化剂。

"A glut in alumina will depress aluminum prices," said Jayesh Shroff, a fund manager at SBI Funds Management Ltd.

孟买SBI基金管理公司一基金经理称，&氧化铝过剩会影响铝价。&

Addition of 3% Lanthana can considerably stabilize the pore structure of the unsupported alumina membrane.

单位： 中国科学院上海硅酸盐研究所高性能陶瓷与超微结构国家重点实验室，上海 200050

Yttrium Aluminum Garnet; 95%alumina ceramics ; Diffusion welding ; Projection tube ; Leakless sealing

钇铝石榴石；九五瓷；扩散焊接；投影管；气密性封接

Furthermore,The results show that alumina is more suitable for the separation of ethyl linolenate than the widely used silica gel, and the supercritical fluids is a good solvent than organic solvent because of its adjustability by changing the extraction conditions.

研究结果表明，超临界流体分离效果优于石油醚和正己烷等有机溶剂，氧化铝载体分离效果优于硅胶，超临界流体结合硝酸银吸附柱分离亚麻酸乙酯具有较好的效果，可得到纯度约95%的亚麻酸乙酯，其工业应用前景诱人。

The main products are: high alumina series, siliceous series, clayey series, corundum series, magnesian series, carbon refractories containing zirconia refractories, insulating refractories, and all kinds of unshaped refractory.

主要产品有：高铝质系列、硅质系列、粘土质系列、刚玉质系列、镁质系列、含碳耐火材料、含锆耐火材料、隔热耐火材料、及各种不定型耐火材料。

Juruti will provide the raw material for the 2.1 million tons-a-year expansion of the Alumar alumina refinery in Maranhao state, a joint venture with BHP Billiton Ltd.

Juruti矿地将为马拉尼昂州的Alumar铝冶炼厂扩产（产量为210万吨/年）提供原材料，这家冶炼厂是与必和必拓公司的合资公司。

Molal contents of alkalescence component and alumina showed in the Seger-formula were similar to each other in the same series. Mixture of materials was melted at 1 270～1 290 ℃, and treated with heat preservation in the range of crystallization temperatures (at 1120 ℃) for 25 minutes. Results showed: if CaO/MgO≈1, crystallate was melilite when O/Si was cl...

结果显示：CaO/MgO≈ 1时，O/Si值近于3 。1时析出钙镁黄长石，在 3左右同时出现黄长石和透辉石，小于 3为透辉石，继续减小开始产生少量硅灰石；CaO/MgO≈0 。5时，O/Si值大于 3 。1时同时形成钙镁黄长石和透辉石，近于 3时仅出现透辉石。

All Engelhard produced thermocouples for glass melters are fabricated with high purity alumina insulation.

安格生产的所有用于玻璃熔炉的热电偶均使用高纯度的氧化铝绝缘。

Which is an joint venture company, specialize producing microlite abrasive (over 90%) AL2O3 high alumina products.

淄博市中源信陶瓷新材料有限公司是一家中外合资企业，专业生产氧化铝（含铝量90%以上）陶瓷制品。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。