以下为句子列表：
英文: BQQ series corundum porous diffuser is a aeration device used in conventional, extended activated-sludge system for industrial and municipal wastewater treatment engineering.
中文: 产品简介：BQQ系列刚玉微孔曝气器适用于工业污水、市政污水处理工程中传统的、扩展的活性污泥处理工艺。
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英文: Corundum is adopted for distributing valve. Mirror-surface treatment ensures good air-tightness and anti-friction. With a simple structure, it is easy for maintenance and long service life is thus expected.
中文: 分配阀采用钢玉、经镜面处理，密封好、耐磨，结构简单易于维护，使用寿命长。
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英文: Corundum mullite product adoprs electrocast refractories .Through high pressure formation and high temperature burning ,this product has comparatively high refractoriness ,mechanical strength and slftening temperature under load .It can be widely used as
中文: 刚玉莫来石制品是采用电熔合成原料，高压成型，高温烧成的具有较高耐火度及机械强度，较高荷重软化浊的可广泛应用于各类工业炉高温、冲刷、侵蚀条件较苛刻的窑炉内衬的耐火制品。
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英文: Miscellany - The red corundum grains in some of the ruby...zoisite rocks have corona like shell consisting of an off-white to yellowish material that, according to Chris Wright of Wright's Rock Shop, Hot Springs, Arkansas (personal communication, July, 20
中文: 备注：在某些红宝石里有红刚玉的交叉双晶，有的黝帘石岩石有象贝壳样的冠状物，颜色为白色到淡黄色，属于一种变种的黝帘石。
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英文: Preparation and application of ultrafine corundum abrasive grains;
中文: 超微晶刚玉磨料的生产技术及应用
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