| 摘要 |
<p>The closure has a grid (62) and a stack of elastic blades (63) maintained between an upstream support frame (61) and a downstream support frame (64). The blades have thickness (ea-ec) that varies from one blade to another, from upstream towards downstream of the stack. Thickness of the blade is chosen in deformed position such that the blade is only subjected to local constraints compatible with elasticity of the material constituting the blade.</p> |
