gel pen

基本解释

You can use a colored gel pen to write dates, names, and other highlights about the activities in the pictures.
您可以使用彩色中性笔写日期，姓名，和其他突出的活动图片。
TDG-MS was applied to study the composition changing of blue gel pen inks on paper during artificial ageing at the time of this study.
采用热重-质谱联用（TDG-MS）技术研究纸张上蓝色签字笔墨水在人为老化过程中组分的变化情况。
At present, the poor stability and bad rheological properties were the big technical bottlenecks of China gel pen ink, which influenced the healthy development of China gel pen ink industry seriously.
因此深入研究中性墨水制备工艺，解决制备过程中的技术瓶颈，实现高品质中性墨水的国产化对推动我国中性笔行业的健康发展具有重要意义。