名词
中文翻译：环形支架
同义词：
['annular ring holder', 'annular support', 'annular clamp']
例句：
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1. The surgeonused a special annular holder to hold the heart open during surgery.
外科医生使用一种特殊的环形支架来在手术中保持心脏开放。
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2. The annular holder was designed to prevent the cable from slipping out of place.
环形支架的设计是为了防止电缆滑出位置。
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3. The annular holder was essential for maintaining the proper alignment of the surgical tools.
环形支架对于保持手术工具的正确对齐至关重要。