n.a pen that has a small metal ball as the point of transfer of ink to paper
同义词：ballpointballpenBiro
ballpoint pen例句
Ballpoint pen Ballpoint pen Ballpoint pen A GC/MS study of the drying of ballpoint pen ink on paper HPLC analysis of ballpoint pen inks stored at different light conditions Needle type ballpoint pen chip and the manufacturing method for a needle type ballpoint pen chip Ink for an aqueous ballpoint pen using oil-in-water type resin emulsion and an aqueous ballpoint pen using the ink Organic and inorganic discrimination of ballpoint pen inks by ToF-SIMS and multivariate statistics Ballpoint pen inks: characterization by positive and negative ion-electrospray ionization mass spectrometry for the forensic examina... Differentiation of Blue Ballpoint Pen Inks by Laser Desorption Ionization Mass Spectrometry and High‐Performance Thin‐Layer Chroma... Classification and individualization of black ballpoint pen inks using principal component analysis of UV-vis absorption spectra Forensic classification of ballpoint pen inks using high performance liquid chromatography and infrared spectroscopy with principal ... A study to investigate the evidential value of blue and black ballpoint pen inks in Australia - Forensic Science International
