| 摘要 |
A diaphragm for closing the bore of a tubular piling guide member and/or supporting leg member of a marine platform or similar structure, the diaphragm comprising reinforced elastic material bonded to a plurality of reinforcing members in the periphery of the diaphragm with the diaphragm being positively secured to the guide member and/or leg of the platform by means of two flat annular plates which have fasteners retaining the diaphragm therebetween via holes therein.
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