| http://www.w3.org/ns/prov#value | - For example, the inner layer 31 is made of a composite material including a reinforcing component which is a woven fabric of reinforcing fibers such as fiberglass and organic fibers, and the outer layer 33 is made of a composite material including a reinforcing component which is a woven fabric of high-strength fibers such as carbon fibers and fiberglass.
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