| http://www.w3.org/ns/prov#value | - To satisfy this requirement by using a therapeutic bed of so-called pedestal type not provided with a driving mechanism including struts and others under the floor, it is optimal to use a hydraulic link mechanism such as an oil pressure link mechanism with a liquid as power means, also in consideration of minimizing a height of the top board from the floor level, for the motion of the patient.
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