| 摘要 |
An improved mat is disclosed. Long and short legs support the mat and cause it to feel resilient although it is fabricated from hard rubber. Ribs prevent the mat from embedding within grating. Grit is selectively placed upon the mat and physically supported. Adhesive for bonding the grit is retained by retention lips. A process for filling grit trenches uses a robot to selectively place adhesive upon the mat. An adhesive dispenser is attached to the robot and the robot is appropriately programmed.
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