名词
中文翻译：自由板长度
同义词：
['freeboard length', "freeboard height例句：1. The ship's free slab length is measured from the waterline to the bottom of the keel.（这艘船的自由板长度是从水线到船底的距离。）"]
例句：
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1. The ship's free slab length is measured from the waterline to the bottom of the keel.
这艘船的自由板长度是从水线到船底的距离。
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2. The engineer calculated the free slab length for the new bridge.
工程师计算了新桥的自由板长度。
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3. The boat's free slab length was sufficient for its intended use.
这艘船的自由板长度足以满足其预定用途。