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这里的leg can是什么东西？jack-up
Leg Can Access - An access trunk shall be provided extending above the top of
the cans. The top of the access trunk shall be fitted with a bolted manhole cover
and a handling arrangement for the cover. Access gratings shall be provided to
the trunk. |
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发表于 2009-5-7 16:04
提升卡
变色卡