| 摘要 |
<p>The trolley has an insulated casing interiorly defining a housing. Supporting units are arranged in the housing for maintaining lunch trays at different superimposed levels at interior of the housing. An insulated separation partition (7) has a communication antenna (21) for a radio-frequency identification tag carried by the corresponding tray between a large grid (12) and a small grid (13) of the tray for permitting reading of the tag irrespective of a positioning direction of the tray at the interior of the housing. The antenna is connected to a CPU connected to a display screen (27).</p> |
