First of all, this issue introduces the concept of the pointergauge to the CAN network so as to reduce the query hops of the CAN networks and improve searching efficiency.
首先，为了减少CAN网络的查询跳数、提高搜索效率，本文将指针表的概念引入到CAN网络中。
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But, usually, detecting of the gauge with pointer is by manual work, after long time for vision work, eyes will get tired, and this leads to low detecting precision and long detecting period.