图28线割穿线孔能以选定的边为基准按标准距离创建。
Figure 28 Wire Threading hole is created based on normal distance to the selected edge.
本文根据园内接正六边形的性质，提出了400米半园式田径场增加基准点的设想。
According to the characteristic of a circular inseribed regular hexagon, this paper proposes an idea of bettering the 400-metre semi - circular trackfeld ground by adding base-points to it.
边系组合夹具是以基础件侧边作组装基准的柔性工装体系。
The design of modular fixture with side fastening is a flexible combination system for the fixtures with the side joint of fundamental elements.
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