Whether you're a student looking for a reliable pen refill or a professional in need of a consistent writing tool, these refills are labeled for easy identification and are sure to meet your needs. 10 pcs/lot Metal pen refill for Crystal Diamond Ballpoint pen student pen rod cartridge core ...
TYPE OF WRITING INSTRUMENT Ballpoint Pen Length: 135.1 mm x Diameter: 9.7 mm PEN BODY Brass body covered with black coat of mail Rhodium and silver-coated push button and hinged clip End of the cap equipped with Caran d’Ache identification (logo + hexagon) Precision push button mechanism for...
20. An identification method based on UV-VIS spectroscopy and principal component analysis was developed to identify blue ballpoint pen inks. 提出了一种采用紫外可见光谱技术结合主成分分析对蓝色圆珠笔油墨种类进行鉴别的方法。 ballpoint pen 英英释义 ...