| 摘要 |
Assembly consists of a frame (3) with a pair (5) of parallel link arms (5a,5b) rotatably connected at one end and located on a connecting component (7). The link arms are rotatably located on each side of the side pieces (8) arranged under a table plate (2). The side pieces are operatively connected with the table plate. The link arms are connected so that on height adjustment of the plate they execute a counter-directed rotary movement. |
