To explore the possibility to bridge facial nerve defects by acellular xenogeneic nerve made through chemical extraction .
探索化学萃取神经支架用于异种移植，桥接面神经缺损的可行性。
Image features extraction and selection are the premise of the defects classifier built-up.
缺陷图像的特征提取和选择是缺陷分类器设计的前提。
Automatic inspection of oil well tubing transverse defects and longitudinal defects is a key means to guarantee the quality of repaired oil well tubing and reduce accidents in oil extraction.
油管是采油工程中的重要构件之一，油管纵、横向缺陷自动检测是保证修复油管质量、减少采油作业事故的关键手段。
The edge detection of fabric defects is the base of geometrical features extraction and the essential process of the fabric defects identification.
疵点边缘检测是提取疵点形状特征的基础，是疵点识别的重要步骤。
Results: The HPLC method is accurate, quick and simple. The extraction-titration method has defects.
结果：建立的HPLC含量测定方法准确、快速、简便，而提取-滴定法测定其含量存在一定问题。
Results: The HPLC method is accurate, quick and simple. The extraction-titration method has defects.
结果：建立的HPLC含量测定方法准确、快速、简便，而提取-滴定法测定其含量存在一定问题。
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