Unverified82% confidenceTradeoffTime unknown
风扇在市电供电时通常不转或低转速很安静,但切换到电池供电或负载较高时风扇会启动产生可察觉噪音
1
Sources
82%
Confidence
Long-term
Relevance
-
First Seen
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Unverified感应灵敏度越高越能及时安抚,但会导致电池消耗快、误触发多(空调声、路过声都触发);家中环境嘈杂时应选可调灵敏度或以定时为主的机型77% similarUnverified带主动散热风扇的无线充电器可维持高功率不降速,但会有噪音(20-30dB),安静环境或卧室慎选;被动散热(铝合金导热)无噪音但持续高功率会降速76% similarUnverified振动感应相比常亮模式更省电,静止自动关闭可显著延长电池使用周期74% similarUnverified便携续航与音质/音量存在权衡:内置电池的便携机为省电通常牺牲扬声器功率和低频下潜,需要浑厚低频掩盖装修/交通噪音的场景,插电款外放效果明显更强74% similarUnverified手摇式兆欧表无需电池、可靠性高但输出电压受摇速影响不稳定;电子式(电池供电)电压稳定、读数快但需注意电量,长期户外无电源作业倾向手摇式74% similar
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