| 摘要 |
First reinforcing members (13a, 13b), having a low modulus of elasticity, are disposed between an electrolyte membrane (11) and second reinforcing members (14a, 14b) having a high modulus of elasticity, so as not to allow the electrolyte membrane (11) to readily rub against the first reinforcing members (13a, 13b) as the electrolyte membrane expands and shrinks and to ultimately prevent degradation of the electrolyte membrane (11). |
