谈谈绘图墨水笔的使用和简单维修绘图墨水笔是描图的重要工具，使用得好坏、熟练与否，直接影响到工程图纸的质量和绘图速度，所以，必需了解该笔的性能并熟悉其使用和维修方法，才能把绘图工作做好。以下简单地叙述其原理和使用、维修方法。（一）绘图笔的出水原理：该笔... Talking about the use of ink pen and simple maintenance drawing Ink pen is an important tool for tracing, the use of good or bad, proficiency or not, directly affect the quality of engineering drawings and drawing speed, so you must understand the pen’s performance and familiar with Use and maintenance methods, can drawing work well. The following briefly describes the principle and use, maintenance methods. (A) Drawing pen’s water principle: the pen ...