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A kind of cable, which makes moist, detects communication system
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A kind of detection communication system of cable arc sag height
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A kind of cable stress detects communication system
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A kind of cable resistance detecting system
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Cable straightening and fixing structure device capable of realizing rotatable adjustment
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A kind of cable construction well head brace type quarter block constructional device
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Electrical control line bearing and electrical signal detecting type long-distance cable
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