求翻译：图8为覆形和不覆形的压合效果，用PE覆形可使线间隙中部的凹入区获得均衡的压力，CVL变形度加大，填胶空间缩小，同时压力将中间多余的胶往两边推动，在中间的区域可填充完全，两边区域的空缺区也比无覆形的小。另外从压合后的外观还可看出，PE覆形还具有阻胶能力，在边缘处溢胶量较小。是什么意思？

Figure 8 is covered-and not a review-the pressure effect, gap with PE coated-Central recessed area to obtain balanced pressure CVL deformation degree increase, glue-filling space narrowing, while pressure intermediate excess adhesive on both sides to promote, in the middle of the area can be filled completely, vacancies in the regional areas on both sides than coated-little. Additionally after pressing appearance can also be seen, PE also features resistance rubber-covered capacity overflow smaller at the edges.