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1980年4月28日冷耀斑(后)环系的形态演化特征及致冷机制
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作者 林隽 章振大 +1 位作者 王振一 R.N.Smartt 《天文学报》 CSCD 北大核心 1990年第3期313-314,T001,共3页
本文分析了1980年4月28日冷耀斑(后)环系的形态演化特征;该环系很复杂,各个环之间相互重叠和嵌套.环系的形状和亮度呈缓慢变化和小的起伏.整个环系处于稳定的主相阶段.计算冷耀斑环由辐射、传导和扩张引起的致冷,并扼要讨论它们的相对... 本文分析了1980年4月28日冷耀斑(后)环系的形态演化特征;该环系很复杂,各个环之间相互重叠和嵌套.环系的形状和亮度呈缓慢变化和小的起伏.整个环系处于稳定的主相阶段.计算冷耀斑环由辐射、传导和扩张引起的致冷,并扼要讨论它们的相对重要性. 展开更多
关键词 耀斑 环系 形态 演化 致冷机制
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Characterization and Growth Morphology of the Ultrafine Manganese Particles
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作者 Jian XU Xiukui SUN Wenxiu CHEN Wenduo WEI State Key Laboratory of RSA,Institute of Metal Research,Academia Sinica,Shenyang 110015,China 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 1993年第3期210-214,共5页
In present work.the ultrafine manganese particles were prepared by gas evaporation method.The structure,size distribution,growth morphology and surface oxidation for the particles were investi- gated by using X-ray di... In present work.the ultrafine manganese particles were prepared by gas evaporation method.The structure,size distribution,growth morphology and surface oxidation for the particles were investi- gated by using X-ray diffraction and electron microscopy.The results indicated that three types of the particles,with the structure of α-Mn,β-Mn and one unknown,respectively existed in the man- ganese particles.The growth morphology of the particles depended on the size and intrinsic structure.When exposed to air,the particles were slightly oxidized only in the surface layer and sta- ble in air. 展开更多
关键词 ultrafine particle MANGANESE gas evaporation growth morphologv
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