| 摘要 |
An edge of a first piece of wood is secured in a groove formed in a second piece by a joining strip of U-section with a base and a pair of sides projecting from outer edges of the base. The strip is adapted to fit over the edge of the first piece and into the groove of the second piece and is formed with inner teeth projecting inward from the sides of the strip so that the teeth poke into the first piece of wood and outer teeth projecting outward from the strip so that the outer teeth poke into the second piece of wood.
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