| 摘要 |
The trolley has a trapezoidal chassis (2) that is mounted on wheels (1) and is strengthened at its base by an L-shaped sheet (3). An adjustable arm (9) is mounted in its upper part and serves as a tripod. The chassis and arm can be folded in <2>//3 by the use of hinges (12). The L-shaped sheet supports an adjustable shelf (4) which pivots so as to support a box.
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