The gripper pad includes a first gripping surface.
叼纸牙垫包括第一叼纸表面。
The plurality of projections are formed at least on one of the first gripping surface and the second gripping surface.
多个突起形成于第一叼纸表面和第二叼纸表面中的至少一个上。
One of a series of small ridges or grooves on the surface or edge of a metal object, such as a thumbscrew, to aid in gripping.
滚花：金属物体表面或边缘上的一系列小峰或凹槽，如指旋螺钉，使更容易握紧。
One of a series of small ridges or grooves on the surface or edge of a metal object, such as a thumbscrew, to aid in gripping.
滚花：金属物体表面或边缘上的一系列小峰或凹槽，如指旋螺钉，使更容易握紧。
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