Unverified85% confidenceDecision RuleTime unknown
承重稳定性看夹持后的力矩设计:鹅颈软管越长(>40cm)越易在婴儿踢晃时下垂,选购时软管长度控制在25-35cm、且带金属内芯的更稳,纯塑料软管2-3个月后普遍出现记忆疲劳下垂
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