名词
中文翻译：支持环
同义词：
['support ring', 'backing ring', 'support sleeve', 'backing plate']
例句：
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1. The newdesign of the phone has a backing ring that can be easily removed for cleaning.
这款手机的新设计有一个可轻松拆卸的背衬环，用于清洁。
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2.The engineer used a backing ring to hold the bolt in place during assembly.
工程师使用一个背衬环来在组装过程中固定螺栓。
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3.The backing ring is made of high-quality stainless steel and is designed to withstand heavy loads.
背衬环由高品质的不锈钢制成，旨在承受重载。