名词
中文翻译：九成员环
同义词：
['nine-membered ring', 'nine-membered ring structure']
例句：
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1. This is a nine-membered ring made of stainless steel.
这是由不锈钢制成的九成员环。
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2. Thenine-membered ringis the centerpiece of theceremony.
九成员环是仪式的中心。
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3.The nine-membered ring is usedto secure the joints together.
九成员环用于将接头固定在一起。