以下为句子列表：
英文: A fold made by pressing a groove into paper stock without cutting its fibers.
中文: 中义在纸张上压出一道凹痕形成折线，但不至压断纤维。
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英文: A furrow or groove formed by running water.
中文: 犁沟由流水形成的槽或小沟
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英文: A groove inside the end of a barrel or cask into which the head is set.
中文: 桶板槽一种刻在木桶边板两端装端板用的槽
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英文: A saddle-shaped hole grooving machine for pressure vessel was introduced. A method for processing saddle groove and the designing of a technical background were put forward.
中文: 摘要介绍了一种压力容器壳体开孔马鞍形坡口加工机械的设计背景技术，给出了马鞍形坡口加工的一种实现方法。
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英文: A wedge or key that fits into a groove to make a joint.
中文: 加强肋作为连接物填入槽内的楔形物或舌状物
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