blind box cover的用法和样例：
- Remove junction box cover that is secured by 3 screws. Place the cover aside and view the wiring diagram on the inside.
- Loosen the screw holding the junction box cover to the top of the water heater. Set the cover aside.
- The invention discloses a foldable packing box which comprises a box body unit, a containing unit and a box cover unit.
- The technic characteristics of the TV box cover were analyzed in detail, the mold design,the mold structure charateristics and mold working priciple were stated.
- Earlier, details about early specs and box cover packaging for the HD DVD release of Harry Potter and the Goblet of Fire appeared on Warner Home Video's official retail and press website (only to later disappear).