| http://www.w3.org/ns/prov#value | - on, there is provided an actuator comprising a fixed member constituting a baseboard, a drive member including a piezoelectric element and a movable member arranged on the fixed member, the actuator beingactivated by applying a voltage to the two sides of the piezoelectric element, wherein the piezoelectric element is polarized in the direction perpendicular to the direction along the thickness th
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