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A first angle (θ1) formed between a second straight line (L2) and a third straight line (L3) is more than 55°. A first length (D1) represents a straight line distance between a first point (A) and a second point (B), and a second length (D2) represents a length of a first electrode core body between...

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Bibliographische Detailangaben
Hauptverfasser: Tanimoto, Koichi, Umemura, Kohji, Yamanaka, Tomokazu
Format: Patent
Sprache:eng
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Zusammenfassung:A first angle (θ1) formed between a second straight line (L2) and a third straight line (L3) is more than 55°. A first length (D1) represents a straight line distance between a first point (A) and a second point (B), and a second length (D2) represents a length of a first electrode core body between the first point (A) and the second point (B). On this occasion, the second length (D2) is 1 time or more and 1.1 times or less as large as the first length (D1).