名词
中文翻译：凸面封闭
同义词：
['convex cover', 'convex closure']
例句：
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1.The engineer designed a convex closure to protect the fragile glass.
工程师设计了一个凸面封闭来保护脆弱的玻璃。
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2. The new product features a convex closure that is easy to use and secure.
新产品的特点是一个易于使用且安全的凸面封闭。
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3.The manufacturer used a convex closure to improve the durability of the packaging.
制造商使用了凸面封闭来提高包装的耐用性。