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二次炼钢钢水加热技术及应用
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作者 谭红星 《钢铁钒钛》 CAS 北大核心 1994年第3期64-68,共5页
对国内外二次炼钢中所应用的钢水加热技术,如利用化学原理加热的RH-OB/PB,RH-KTB,CAS-OB,VOD/VOH,IR-UT等;利用电加热的LF,VAD,直流电孤加热,感应加热,等离子体加热等;和其它如电渣加... 对国内外二次炼钢中所应用的钢水加热技术,如利用化学原理加热的RH-OB/PB,RH-KTB,CAS-OB,VOD/VOH,IR-UT等;利用电加热的LF,VAD,直流电孤加热,感应加热,等离子体加热等;和其它如电渣加热,燃料-氧加热等技术及其实际应用效果作了较全面的介绍,作者针对攀钢的实际情况提出了建议。 展开更多
关键词 精炼 连铸 加热 温度 浇注
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Weakly Almost Periodic Point and Measure Centre 被引量:10
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作者 周作领 《Science China Mathematics》 SCIE 1993年第2期142-153,共12页
In studying a dynamical system, one finds that there frequently exist some kinds of disturbance or false phenomenon. In order to remove them, we introduce a concept of the measure centre and in order to determine the ... In studying a dynamical system, one finds that there frequently exist some kinds of disturbance or false phenomenon. In order to remove them, we introduce a concept of the measure centre and in order to determine the structure of the measure centre, we also introduce another concept of the weakly almost periodic point. We totally determine the structure of the measure centre and exhibit an example to show that the measure centre may be contained properly in the motion centre and there is a system which is chaotic on the nonwandering set but has zero topological entropy. 展开更多
关键词 eontinuous self-map INVARIANT MEASURE WEAKLY ALMOST PERIODIC point MEASURE centre.
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