| 摘要 |
A plate 10 having fins 11 is joined to a baseplate 14 having recessed grooves 15 and holding protrusions 17 by a pressing operation. Protrusions on the finned plate are located within the recesses on the baseplate by means of pressing members 18a and and holding protrusions 17a are bent by pressing members 18b to further secure the two parts together. |
