| 摘要 |
An electron beam tube ( 17 ) having a longitudinal axis comprises a first component, such as a ceramic wall ( 5 ) and a second component such as a drift tube assembly having a mounting plate ( 3 ). The tube further comprises means, such as member ( 18 ), arranged to allow relative sliding movement of the first component relative to the second component in a radial direction. The invention helps to alleviate mechanical stresses caused by differential thermal expansion of the components.
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