第一和第二层（8，9）具有波状分界面断面轮廓， 该断面轮廓限定出第一和第二弹性体材料之间的机械接合元件。
The first and second layers (8, 9) have an undulated interface profile defining mechanical-engagement elements between the first and second elastomer materials.
将聚苯乙烯泡沫塑料元件压入开口直至感觉已接合。
Press styrofoam element into the opening until it is felt to engage.
截止阀的柔性元件的径向变形值可以调节，保证柔性螺纹套的环槽与螺杆上的螺纹的接合深度。
Radial distortion of the flexible component in the stop valve can be adjusted so as to ensure the joint depth between flexible screw thread trepanning circular groove and screw thread on the screw.
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