| 摘要 |
Support which is noteworthy on account of its low weight and ease of assembly and also because of the small amount of space it occupies, which makes it possible to vary the orientation and height of the apparatus, and which consists of a column fixed to the ceiling and floor, with an arm which can slide axially with respect to the column, and which has one or two surfaces for supporting the vision-emitting apparatuses projecting perpendicularly from it. <IMAGE>
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