了解星系对的空间分布和随时间的演化是研究星系的形成和演化的重要手段之一,而其中完备星系对样本的选择是研究的关键.比起光学波段,在红外波段选择和观测星系对有很多优势.介绍了利用红外望远镜Spitzer卫星的SWIRE(the Spitzer Wide-a...了解星系对的空间分布和随时间的演化是研究星系的形成和演化的重要手段之一,而其中完备星系对样本的选择是研究的关键.比起光学波段,在红外波段选择和观测星系对有很多优势.介绍了利用红外望远镜Spitzer卫星的SWIRE(the Spitzer Wide-area Infra Red Extragalactic survey)数据选择完备星系对样本的新方法,比较分析了星系对选源标准,得到了初步星系对样本.展开更多
Thc tail gas of middle and small-sized calciumcarbide furnaces are treated by the means of gravity,Ventri scrubber, dust separation with impact and foam removing,the of fluents of the three wastes can meet the requirm...Thc tail gas of middle and small-sized calciumcarbide furnaces are treated by the means of gravity,Ventri scrubber, dust separation with impact and foam removing,the of fluents of the three wastes can meet the requirments of national standard,and claritying efficiency reaches 95% -98%. A set of comprehensive utilization system for the three wastes is estabilished that the washings of desulphurixation and dustremoval of boiler f lue gas is reused in the dust-removing system for calcium carbide furnace,and the residues arc mixed with coal to burn for boiler,it has the effects on energy-saving and pollution cotrol.展开更多
文摘了解星系对的空间分布和随时间的演化是研究星系的形成和演化的重要手段之一,而其中完备星系对样本的选择是研究的关键.比起光学波段,在红外波段选择和观测星系对有很多优势.介绍了利用红外望远镜Spitzer卫星的SWIRE(the Spitzer Wide-area Infra Red Extragalactic survey)数据选择完备星系对样本的新方法,比较分析了星系对选源标准,得到了初步星系对样本.
文摘Thc tail gas of middle and small-sized calciumcarbide furnaces are treated by the means of gravity,Ventri scrubber, dust separation with impact and foam removing,the of fluents of the three wastes can meet the requirments of national standard,and claritying efficiency reaches 95% -98%. A set of comprehensive utilization system for the three wastes is estabilished that the washings of desulphurixation and dustremoval of boiler f lue gas is reused in the dust-removing system for calcium carbide furnace,and the residues arc mixed with coal to burn for boiler,it has the effects on energy-saving and pollution cotrol.