| http://www.w3.org/ns/prov#value | - The separator made of polypropylene or polyethylene thermally contracts so that microscopic pores for electrical conduction are closed, and the shut-down function of the separator takes place, and therefore, there is a possibility of the shut-down function not being completed when a separator having an area contraction ratio at 120??? C. smaller than approximately 1% is used.
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