名词
中文翻译：支承轨枕底板
同义词：
['subgrade', 'subbase例句：1. The sub-rail track bed is crucial for the stability of the railway.（支承轨枕底板对于铁路的稳定性至关重要。）2. The engineer inspected the sub-rail track bed before starting the construction.（工程师在开始施工前检查了支承轨枕底板。）']
例句：
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1. The sub-rail track bed is crucial for the stability of the railway.
支承轨枕底板对于铁路的稳定性至关重要。
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2. The engineer inspected the sub-rail track bed before starting the construction.
工程师在开始施工前检查了支承轨枕底板。
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3.The sub-rail track bed was designed to withstand heavy traffic loads.
支承轨枕底板被设计来承受重交通负载。