This text described the means of apply the ICP plasm spectrum instrument analyze minim Nb in steel made sure that the interrelated condition of found the analytical method.

本文叙述了应用icp等离子光谱分析仪分析测定钢中微量铌，确定了创建该分析方法的相关条件。

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This method is used in development of Nb-bearing steel and determination of controled sample of direct-reading spectrometer by furnace with fast and simple operation and accurate result.

方法被用于含铌品种钢的开发和炉前直读光谱控制样品的定值。该方法简单、快速，结果准确。

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The optical microscope and SEM were applied to analyze the formation mechanism of transverse corner cracks of Nb microalloyed steel slab.

采用金相显微镜和扫描电镜分析了含铌微合金化钢铸坯角部横裂纹的形成原因。

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