| 摘要 |
A tubular member constituting a first electrode contains a depolarizing agent and a second electrode axially extending therethrough. One of the open ends of the tubular member is sealed with a first flexible disc with an end portion of the second electrode projecting outwardly through the disc and provided with an electrically conductive cap which overlies the disc. The other open end of the tubular member constitutes a radially inwardly extending annular bead which fluid-tightly engages and retains a second flexible disc and a contact disc which overlies the second flexible disc and engages the bead of the tubular member. A dielectric and a protective casing surround the tubular member.
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