在学生的生理、病理、药理实验中,记纹鼓仍是不可缺少的常用记录装置。因此描笔的选用、制作,就成为实验记录好坏的关键。通过多年的实践、摸索,我们感到鸟头式描笔使用较为理想。为与同行交流,特将制作方法及使用情况作以介绍。一、描笔的制作程序1、将半个乒乓球(赛璐珞)剪碎、置于盛有约10毫升丙酮的小瓶内,搅拌、摇动,使其充分溶解成冻胶状。2、在酒精喷灯下将(?)5mm的玻璃棒拉制成弯曲约135°,长10mm,成顶端尖细的鸟头式模子 In students’ physiology, pathology, and pharmacology experiments, the recording drum is still an indispensable common recording device. Therefore, the selection and production of the pens become the key to the quality of the experimental records. Through many years of practice and exploration, we feel that bird-headed writing is more ideal. In order to communicate with colleagues, we will introduce the production methods and usage. First, the pen writing process 1, a half of the table tennis (celluloid) cut into pieces, placed in a vial containing about 10 ml of acetone, stirring, shaking, so that it fully dissolved into a jelly-like. 2, in the alcohol torch under the (?) 5mm glass rod drawn into a bend about 135 °, 10mm long, into the top of the bird’s head mold