名词
中文翻译：Unknown
同义词：
['窄面凸缘，狭面凸缘，窄面凸台例句：1. The narrow face flange on the door is designed to keep insects out.（门上的窄面凸缘设计用来防止昆虫进入。）']
例句：
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1. The narrow face flange on the door is designed to keep insects out.
门上的窄面凸缘设计用来防止昆虫进入。
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2. The engineer used a narrow face flange to make the machine more efficient.
工程师使用窄面凸缘使机器更加高效。
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3. The narrow face flange made it difficult for the workers to reach the top of the ladder.
窄面凸缘使得工人难以到达梯子的顶端。