| 摘要 |
<p>The device (1) has an enclosure (2) provided internally with a container (4) sealed at the bottom and open at the top, where the container is vertically movable within the enclosure from lower position to higher position, and vice versa. A cylinder (5) is internally connected to the container, where deployed position of the cylinder corresponds to lower position of the container, and a compressed position of the cylinder corresponds to the higher position of the container. The cylinder is fixed at a lower interior wall of the container via a multiaxial rotary joint (6).</p> |
