例句
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In addition, acid and halogenated hydrocarbons aryl the coupling reaction is a C - C bond important ways.
此外, 芳基硼酸与卤代烃的偶合反应是形成C -C 键的重要途径.
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Especially indicated for glazes which contain lead and boron.
尤其适用于含铅、含硼的釉药.
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But the strength will reduce asB added over 1.37 at . - %.
但当硼含量超过1.37at.-%时,则降低强度和塑性.
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The industrial production, research & development of ludwigite are reviewed. The significance of development also stated.
述国内对硼镁铁矿工业生产 和 科研开发情况,以及硼镁铁矿开发的意义.
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Then the imidazoline boric acid ester was synthesized when the intermediate reacts boric acid.
采用两步法合成月桂酸味唑啉硼酸酯.
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Methods: The menthol and hydroxybenzene in complex boric acid powder were determined by GC.
方法采用毛细管气相色谱法测定复方硼酸散中薄荷醉和苯酚的含量.
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A hardfacing electrode containing boron and various alloy elements has been developed.
研制出一种含硼等多种合金元素的耐高温磨损堆焊焊条.
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By contrast , the process for goethite and manganite were exothermic.
硼在针铁矿、水锰矿上的吸附为放热过程,解吸为吸热过程.
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Determination micronutrient boron for foliar fertilizer by indirect acid - base titration, overcome the inadequate of others method.
采用间接酸碱滴定法,测定叶面肥中的硼含量, 克服了其它方法的不足,试验结果满意,便于应用推广.
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Boric acid is an excellent floater while gibbsite has no native floatabiligy at all.
硼酸是一种极好的漂浮物,而水铝氧却毫无浮动性.