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untight
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未密封的,漏,漏的,不紧密的
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详细解释：
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以下为句子列表：
英文: Using WL15 type circuit breaker as a representative of air circuit breaker, the problems existing in its routine operation and maintenance, such as untight seal of dewatering valve, were analysed, their solution method were proposed and the better effect
中文: 摘要对WL15型开关为代表的空气断路器在日常运行维护中存在的放水阀密封不严等问题进行分析，提出了解决的方法，在实施中收到了较好的效果。
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