Unverified85% confidenceDecision RuleTime unknown
选购螺旋缠绕管收纳电线时，管径应选电线束直径的1.2-1.5倍：如3根电线束约6mm，选8-10mm规格缠绕后既能包裹又留有余量，过紧会导致缠绕困难和散热差
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