名词
中文翻译：吊车头
同义词：
['cargo lift', 'container stacker']
例句：
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1.The derrick head is used to lift heavy loads onto the ship's deck.
吊车头用于将重物提升到船的甲板上。
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2. The cargo block has been designed to efficiently stack and unstack containers.
集装箱堆叠器已被设计成高效地堆叠和卸载集装箱。
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3.The derrick head was a critical component in the loading process.
吊车头是装载过程中的一个关键组件。