The physical properties and thickness of cushion materials have remarkable influence on impact bruise.
缓冲材料的物理特性与厚度对苹果的碰撞损伤有显著的影响。
In a definite scope, the impact time and contact area are linearly increased while the maximum acceleration and bruise volume reduced with the increment of thickness of cushion materials.
在一定范围内，随着缓冲材料厚度的增加，碰撞时间与接触面积线性增加，最大加速度与损伤体积相应减小。
The major mechanical damages of fruit are usually not direct split but local bruise caused by dropping impact during harvesting, sorting, packaging, and transportation.
对于果实产品，通常其作业、运输过程中的主要机械破坏形式为跌落冲击引起的产品局部损伤，而非直接发生破裂。
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