| 摘要 |
<p>Coated electrodes comprise a core and coating of which a longitudinal section is removed which may be flat, curved or a groove. Specif. the core is circular in section and has a longitudinal flat section removed. The difference DELTA H(=r-s) between the shortest distance from the core centre and its periphery and the shortest distance between the core centre to the edge of the flat face satisfies the ratio DELTA H/r is not >1.</p> |
