第三阶段(1971年- 1977年)通过发掘确立了小河沿文化，通过红山文化玉龙的发现和墓葬发掘，辨识出红山文化玉器。

In the third stage (1971-1977), Xiaoheyan culture was confirmed by excavation and jades of Hongshan culture was recognized by finding jade dragon and excavating tombs.

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采用多段样条方法提取阻力系数，可以保证阻力曲线的一阶连续性，且能准确地辨识出从亚音速到超音速下的阻力系数。

The multivariate splines were adopted to identify the drag coefficient from subsonic to supersonic, which can keep the curve smooth.

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搜寻路由表只须检查封包最前面的一小段资料，借此辨识封包的目的地。

Routing table searches require only a look at a short string of data in the initial part of the packet, the header that tells a packet where to go.

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