| 摘要 |
An elongated radioactive element to be fastened to one end of an elongated wire-shaped element, and provided with a front retaining part, a connecting part, and a rear retaining part, as well as segment-shaped elements which are radioactive or are to be made radioactive, which are provided with a center bore and which, enclosed between the front and rear retaining parts, are placed, one behind the other, by means of the center bore over the connecting part and can tilt with respect to each other, all in such a manner that the radioactive element is an elongated member which is supple and flexible over the greatest part of its length, coupling means being provided for connecting the radioactive element to the elongated wire-shaped element.
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