名词
中文翻译：壳数
同义词：
['shell identification number', 'shell identification code']
例句：
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1. Theship's crew used the shell number to identify the location of the lost treasure.
船员们使用壳号来识别丢失宝藏的位置。
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2. The shell number is a unique identifier for each individual piece of equipment.
壳号是每件设备的唯一标识符。
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3.The shell number was used to track the movement of the cargo during transit.
壳号用于在运输过程中追踪货物的移动。