The upper edge of the upright surface of the short edge female groove is provided with a short edge waterproof edge.

所述短边母槽，在其短边垂直面的上边沿设有短边防水沿；

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The upper edge of the upright surface of the short edge female groove is provided with a short edge waterproof edge.

所述短边母槽，在其短边垂直面的上边沿设有短边防水沿；

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