| 摘要 |
An apparatus having in a mutually rotatable configuration, a first fluid shear member connectable to a first moveable body part of a handheld device and a second fluid shear member connectable to a second moveable body part of the handheld device. The first and second fluid shear members are configured to experience mutual rotation when the first and second moveable body parts are connected respectively to the first and second fluid shear members and when the moveable body parts are moved in relation to one another. The first and second fluid shear members are matched and there is fluid between the first and second fluid shear members so as to invoke viscous dampening when the first and second fluid shear members rotate in relation to one another.
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