The effects of RE compound modificator on the mechanical properties and microstructure of high carbon high speed steel used for roller ring were investigated by SEM, EDS and EPMA.

通过扫描电镜、能谱分析仪和电子探针研究了稀土复合变质剂对离心铸造的高碳高速钢轧辊组织和力学性能的影响。

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Stripper harvesting can reduce the quantity of non-grain materials in the re-threshing roller and greatly cut down consumption of energy.

梳穗收获使进入复脱滚筒的非谷物量减少，功率消耗大大降低。

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She said the last three weeks had been ''like a roller coaster'' and added: ''We're all so proud of them - it's a fantastic feat.

BBC: Balloonists: Next stop Geneva