pen core

the invention relates to a piston in a pen-type insulin syringe pen core, belonging to the field of mechanical appliances.

本发明属于医疗器械领域，涉及笔式胰岛素注射器笔芯内的活塞。

The trouble and the waste caused by abandoning the core of the ball pen and changing a new one without using up the ink are avoided.

避免了圆珠笔总是笔油用不完就要将笔芯弃旧换新，而带来了麻烦和浪费。

the utility model relates to a coloured-ball pen, comprising a penholder and a pen core which is arranged in the penholder.

一种彩珠圆珠笔，由笔杆、装于笔杆内的笔芯组成。

This utility model relates to a pen which can write on the plane with stereovision effect, consisting of a pen point, a pen core and a pen tube.

本实用新型涉及在平面上书写出具有立体视觉效果字的笔，由笔尖、笔芯和笔管三部份组成。

Can say two Song genre painting making prosper develop, have written one pen thick and heavy in colors for two Song drawing, and have been also indispensable core forces of two prosperous Song drawing institutes.

可以说，两宋风俗画的繁荣发展，为两宋绘画书写了浓墨重彩的一笔，也成为两宋绘画繁荣所不可或缺的中坚力量。