| 摘要 |
<p>The flanges (2,4) of outer casings (1,3) are engaged to form a cavity (5). A seal (6) seals the gap formed between the outer casing and an inner casing (7). The inner casing is arranged in the cavity, such that it is rotatable within the cavity. A load bearing element (8) is arranged between outer casing and the inner casing.</p> |
