| http://www.w3.org/ns/prov#value | - For the determination of the gel content of the basic molding material, the portion of the partially cross-linked gel remaining in the same cell was treated under the same conditions in the same mold as those of themolding, removed from the mold after a varying length of time, i.e. 0.5 minute, 1 minute, 2 minutes, 3 minutes, 4 minutes, and 5 minute, and immediately immersed in liquefied nitrogen f
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