根据第一段“After noticing that her eighth grade students had problems focusing during math class, a North Carolina teacher decided to channel(引导)their energy in a different way-cycling.(北卡罗来纳州的一位老师注意到她的八年级学生在数学课上很难集中注意力,于是决定用一种不同的方式来引导他们的...
An industrial tundish is designed and operated to produce high-quality clean steel and less material loss [1–3]. The quality of solidified steel and quantity of steel scrap is an increasingly important issue in the industry. In the sequential casting process, the old ladle is replaced by a ...
3. Experimental Set-Up The experiments on the scour processes were carried out in a rectangular flume of closed-circuit flow at the Hydraulic Laboratory of the Mediterranean Agronomic Institute of Bari (Bari, Italy). The flume had glass sidewalls and a Plexiglas floor, allowing a good side ...
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In this context, a new type of ultra-low-grade iron appeared with the development and utilization of China's iron ore resources [3,4]. The ultra-low-grade magnetite, with a lower than 20% total iron content, has been extracted by open-pit mining and processed massively since 2001 in ...