... laying of cable 电缆的敷设 laying of keel 龙骨安放 laying of pipeline 管道铺设 ...
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date of keel-laying 船舶开工建造日期
laying of keel
铺设龙骨
以上为机器翻译结果，长、整句建议使用 人工翻译 。
First, he laid the floor under the direction and length to allow the laying of the keel position.
首先，他根据地板铺设的方向和长度，划出龙骨铺设的位置。
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The workers are laying a keel of the ship.
工人正在给那艘船安龙骨。
The date of the opening is also significant, as it coincides with the anniversary of the laying of Titanic's keel, on 31 March 1909.
BBC: Titanic centenary launched with R J Welch exhibition
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