名词
中文翻译：环形防止器
同义词：
['annular ring', 'annular ring preventer例句：1. The annular preventer is used to prevent the formation of cracks in the pipe.（环形防止器用于防止管道中形成裂缝。）']
例句：
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1. The annular preventer is used to prevent the formation of cracks in the pipe.
环形防止器用于防止管道中形成裂缝。
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2. The annular preventer was designed to protect the inner wall of the pipe from damage.
环形防止器被设计来保护管道内壁免受损害。
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3. The annular preventer was installed to ensure that the pipe remained intact during the installation process.
环形防止器被安装以确保在安装过程中管道保持完整。