| 摘要 |
The element has a fusible zone (11) covered partially with a coating (2), where the element is made of three parts in which an intermediate part (102) extend transversally with respect to two other parts (101, 103). The zone is made by reduction of transversal section of a rigid part (1), where the zone is made by opening arranged in the part. The part presents two opposite sides (13, 14), where the part is made of metallic or plastic material. |
