【摘要】 本文从工作原理入手,逐步论述了DB—3型记录笔头各种参数的含义,影响笔头参数的诸种因素以及参数之间的关系等实用问题.更多还原

【Abstract】 Starting with the working fundamentals, this paper discusses the meaning of DB-3 type recording point parameters, factors of influence and applied problems about their relations.更多还原