名词
中文翻译：铁质外层
同义词：
['iron oxide', 'iron phosphate', 'ferric oxide']
例句：
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1. The steelplate was coated with a layer of ferrodextran to protect it from corrosion.
为了保护钢板不受腐蚀，它被涂上了一层铁质外层。
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2. The engineer used a special ferrodextran to coat the metal parts during assembly.
工程师在组装金属部件时使用了一种特殊的铁质外层。
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3.The new tire was made with a layer of ferrodextran that improved its durability and grip.
新轮胎采用了一层铁质外层，这提高了它的耐用性和抓地力。