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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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The composition, technique and characters about the manganite based thermistor materials were reviewed in this paper.
本文对含锰尖晶石系列热敏电阻材料的组成 、 制备工艺和性能给予了评述.
水锰矿???
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