Aiming at the characteristic in feature extraction of cold steel strip surface defect images, a mixed feature extraction method of separable criterion based on class distance is proposed.
针对冷轧带钢表面缺陷图像特征提取的特点，提出了基于类距离可分离性判据的混合特征提取方法。
Extraction method: cold press method.
萃取方法：冷压法。
A method for determining mercury (Hg) in reprocessing process was investigated with separation by dithizone extraction and determination by cold atomic fluorescence spectrometry.
本工作建立了双硫腙萃取分离，冷原子荧光光谱法测定后处理工艺中汞的方法。
A method for determining mercury (Hg) in reprocessing process was investigated with separation by dithizone extraction and determination by cold atomic fluorescence spectrometry.
本工作建立了双硫腙萃取分离，冷原子荧光光谱法测定后处理工艺中汞的方法。
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