ballpoint pen

n.

原子笔；

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