倘使要将两块PCB互相连结，寻常我们都会用到俗称「金手指的边接头（edge connector），金手指上蕴涵了许多暴露的铜垫，这些铜垫到底上也是PCB布线的一部份。
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这四个分离变量的相互关系有点像带有柔性接头的四边形框架。
The interrelationships of these four separate variables are somewhat similar to a four-sided frame with flexible joints.
通过本文的设计分析，达到了减轻结构重量以及降低连接接头各钉孔边应力集中的双重工作目标，得到了若干具有工程意义的结论。
This research work reaches the dual destinations of decreasing the joint weight and the stress concentration, and provides some significant conclusions for engineering practice.
对接接头存在错边时，用现行方法测量会得到两个值，究竟那一个是真实余高值，大家莫衷一是。
Two reinforcement measuring values were gained by present measuring methods when butt joint offset existed.
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