Water ink and gel ink can be differentiated through chemical method and TLC.
通过化学法和TLC法可以确定签字笔墨水是水性还是中性；
The design effectively avoids limiting the shape of the ink box fixed by the elastic gel piece and greatly increases the ink storage capacity of the ink box fixed by the elastic gel piece.
而且这种设计能有效的减少用弹性胶体件固定的墨盒形状的限制，大大增加用弹性胶体件固定的墨盒储墨容量。
The machine has both high and low speed three axles scraper, it can widely apply in high viscosity coating, organic silica gel, printing ink, dye and stick colloid.
该设备有高速、低速活动刮板三轴，广泛应用于高粘度涂料、有机硅胶、油墨、染料、粘胶剂。
Materials: rapidograph, silver gel pen, water color pencil, colored ink, paper.
媒材：针笔、银色中性笔、代针笔、水性彩色铅笔、彩色墨水。纸。
By using the structure, the pen point points downward all the time when the gel ink pen is hung, thereby preventing the ink in the gel ink pen from flowing out.
由于采用上述结构，所以在中性笔在挂笔时，笔尖始终向下，能防止中性笔芯墨溢出。
The results indicate that with the composite surfactant of OP and FSO, the surface tension of the gel ink can be adjusted to the appropriate value, and the viscosity stability is improved effectively.
结果表明：添加OP与FSO复配的表面活性剂不但可以将中性墨水的表面张力调节到适当范围，而且改善了中性墨水黏度的稳定性。
In addition, the particle size distribution of the carbon black pigment in the ink is more uniform. And the pens filled with such gel ink behave good writing performance.
此外墨水中颜料炭黑颗粒粒度分布也较为均匀，墨水灌制成笔后划线书写线条饱满。
Although China was the major manufacture of ball-point pens in the world, the gel pen ink which was in high technology is still rely on importing so far.
我国已成为中性笔的生产和销售大国，但技术含量较高的中性墨水仍主要依赖进口。
The company mainly produces roller-tip pens, ball point pens, Gel ink pen white board marker permanent marker, mechanical pencil and other stationeries.
公司主要生产水性笔、中性笔、圆珠笔、白板笔、记号笔、活动铅笔等文化用品。
The company mainly produces roller-tip pens, ball point pens, Gel ink pen white board marker permanent marker, mechanical pencil and other stationeries.
公司主要生产水性笔、中性笔、圆珠笔、白板笔、记号笔、活动铅笔等文化用品。
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