求翻译：夹板形状对夹持机构有效夹持所需临界夹持力具有重要影响[19]。夹板形状一般设计成圆弧面式、平板式以及V 型板式。平板式夹板夹持接触力较大；圆弧面式和V 型板式夹板夹持接触力小，但夹板形状确定以后，只能夹持直径一定范围的树径[15]。本设计采用平板式夹板，并在夹板内侧安置橡胶垫片，减小夹持接触压力，降低对树干的夹持损害，在夹持力的作用下橡胶垫片会产生一定变形，并与树干贴合在一起。是什么意思？

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The clamping plank shape to supports on both sides the organization effective clamp to need the critical chucking power to have affects 19( importantly).Clamping plank shape general layout full circle cambered surface type, plate type as well as V beat.The plate-type clamping plank clamp contact for

Plywood shape on the clamping mechanism effective critical clamping force of clamping required is important [19]. Plywood shapes designed curved surface, plate-type and v-type plate. Flat-plate clamping force larger; arc-type and v-type plate clamping force is small, but plywood shapes are determine

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