The lower side of the tongue-and-groove strip wood floor is laid with a wire groove which is open and is arranged with a cover plate.
在企口长条木地板下面铺设有线槽，线槽是开口的，上面有盖板。
The lower side of the tongue-and-groove strip wood floor is laid with a wire groove which is open and is arranged with a cover plate.
在企口长条木地板下面铺设有线槽，线槽是开口的，上面有盖板。
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