笔尖记录器; 笔式自动记录器; 描笔式记录器;笔尖记录器钢笔记录器

twin pen recorder PEN Pen. pen recorder drop pen bow pen pen oscillograph mapping pen ball-pen stock pen recorder pen multi-pen recorder penumatic double-pen recorder two pen recorder three-pen recorder pen automatic recorder inkless pen recorder pen-and-ink recorder four-pen recorder dual pen recorder two-pen recorder