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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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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The lamellar cracking was found at the specimen of HSLA Nb-V steel plate after tensile strength testing, then the fracture surface of the specimen was studied by SEM and EDAX.

针对高强度低合金铌钒钢板在拉伸试验后出现分层开裂的现象，采用SEM、EDAX进行微观分析，发现试样内部有大量夹杂物存在，这些夹杂物主要含有钙、氧、硫、锰等元素。

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