| 摘要 |
The elongate inner bulb ( 1 ) defines a longitudinal axis (A) and is sealed at mutually opposing ends by sealing parts ( 6; 32 ), an outer bulb being placed, with an adjoining tube piece, over the inner bulb and being fixed to the sealing part by means of an annular beading formed there, the end of the tube piece being radially attached to the beading, the maximum inner diameter of the beading being larger than the outer diameter of the sealing part in the region of the beading.
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