Select planar surface or datum plane.
任意选择一个平面。
A planar motion device is also described for crawling over a planar surface.
还描述了用于在平坦表面上蠕动的平面运动设备。
In another embodiment, the exterior faces of the sidewalls include a planar surface.
在另一个实施例中,侧壁的外部面包括平坦的表面。
In another embodiment, the exterior faces of the sidewalls include a planar surface.
在另一个实施例中,侧壁的外部面包括平坦的表面。
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