| http://www.w3.org/ns/prov#value | - Although blocks 57 are shown being forced by a fluid, blocks 57 can be forced by other means such as springs, screws and other mechanical devices, as long as the axial force exerted on a block, for example along direction 59A, is independent of the axial force exerted on another block, for example along direction 59H and is substantially unaffected by the shear force exerted on the block due to th
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