The frame node as the research object, analyzes machining problem about multi-surface inclined-hole processing, a way to express 2D view were presented;

以网架球为研究对象，分析族类零件多面斜孔的设计加工难点，提出一种平面形体的表达方法；

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I feel it is like a dark hole when I try to find some factor that could express all. so I think very hard one by one in different background, and I find a way out.

于是我将自己分段锁定在不同的背景下，逐一进行思考，当从断裂的时间中走出时，发现眼前的黑洞变得越来越小，光亮也由此产生。

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