edge distance meaning in Chinese

边到边距离
边端距离
边缘距离

For the laminate which contains a crack , the suggested patch shape is rectangle , the patch thickness is equal to the parent laminate and the patch stacking sequence is the same as the parent laminate . because the length and the width of the patch have the fewer influence on the repair effect , the patch has the least weight on the basis of enough edge distance , end distance and space having been promised
?对于含裂纹复合材料层压板，长方形补片的长度和宽度对修补效果没有非常明显的影响，因此在保证连接边距、间距和端距的条件下，补片大小的选择应该以节省重量为原则；而当补片的铺排顺序与母板相同、相对厚度为100时能够获得比较好的修补效果。