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发表于 2007-11-28 08:52
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来自: 英国
11.1.3. Where the shell plating is greater than 12,5 mm, then plugs of type A may be fitted, see Fig. 6.11.1.
11.1.4. Where the shell plating is less than 12,5 mm, then an adequate pad or doubling is to be fitted in way of plugs, so that the maximum number of threads is obtained with screwed plugs, Type B, see Fig. 6.11.1. |
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