| 摘要 |
The removable seals system has a lirsl vertically movable platform defining opposite upper ami lower sides, a seal member comprising at least one seat and first and second complementary male-female engagement members respectively provided on the first platform and on the scat member. The scat member may be removably installed in an operative position on the upper side of the first platform through a releasable engagement of the first and second male-female engagement members with one an- other.
|
