| 摘要 |
Ultrasonic transducers comprising two metal parts, a core (1) and a bottom vessel (2). Between these piezoelectrical elements (3) are arranged as well as cable connection (4). The diameter of the core (1) and the inner diameter of the bottom vessel (2) are so adjusted that the core (1) can be shrunken fixedly in the bottom vessel (2) which rests on a support (6). A pressure on the upper part of the core (1) compresses the piezoelectrical elements (3) between the core (1) and the bottom vessel (2).
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