短语词组短语Keel -block 基尔试样keel -block capping timber 龙骨墩顶木dry dock keel -block 干船坞龙骨墩;详细翻译keel block wedge 龙骨墩楔Bilge keel block 舟必龙骨垫keel and bilge block 垫船木块;详细翻译keel block tier 龙骨垫木台 返回 keel block