例句與造句

1. various perovskite compositions have been prepared through this method and their structure, electronic and magnetic properties have been studied . in this paper, la2o3, sro2i mn, naclo4, kmno4 were used as raw materials and were synthesized into la1-xsrxmn03 powder by employing self-propagating high-temperature synthesis ( shs ) technology and filtration processing . in addition, the mechanism of chemical reaction and microstructure formation process of la2o3-sro2-mn-naclo4-kmno4 system was studied
   la_(1-x)sr_xmno_3的shs合成工藝研究發(fā)現(xiàn)，在shs合成過(guò)程中液相量的多少和反應(yīng)溫度有很大的關(guān)系，通過(guò)在反應(yīng)體系內(nèi)加入第二相氧化劑kmno_4可以控制反應(yīng)進(jìn)程，kmno_4在反應(yīng)中分解得到的高活性mno_2利于產(chǎn)物的生成，一定程度上避免了氧缺位和中間產(chǎn)物的形成。
2. It's difficult to find mechanism of chemical reaction in a sentence. 用mechanism of chemical reaction造句挺難的