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Coupling for connecting first and second lines has first and second coupling elements on first and and second lines respectively
Coupling for connecting first and second lines has first and second coupling elements on first and and second lines respectively
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机译:用于连接第一条和第二条线的联轴器分别在第一条和第二条线上具有第一和第二条连接件
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摘要
A first coupling element (4) has communications devices (11,12) that can be interrogated from outside by a calling subscriber. A sensor (10) connects to the communications devices when ready for operation and, when a second coupling element (7) is present, it has a status other than when the second coupling element is not present.
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