| 摘要 |
A disc tray comprises a recess, a first outer land, a second outer land, a first opening, and a second opening. Two outer lands extend upwards from the recess. Each outer land comprises an upper plane and a wall. Each wall connects the recess and each upper plane. Each opening comprises a plane opening and two upward openings. Each plane opening is located in the recess. Two upward openings are located on two edges of each plane opening, respectively, such that a protruding portion is formed on each upper plane.
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