Unverified88% confidenceDecision RuleTime unknown
擦2层以上高窗或落地窗顶部，选最大延伸长度≥3.5m的型号；单纯擦室内普通窗户1.5-2m足够，超长杆反而增加抖动难以控制
1
Sources
88%
Confidence
Long-term
Relevance
-
First Seen
Sources
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Unverified外窗清洁伸缩杆有效工作长度应≥3.5米才能覆盖普通2.8米层高的落地窗上沿；仅需清洁1.5米以下窗户选固定短杆更稳定不晃88% similarUnverified外墙玻璃/落地窗擦洗需最大延伸长度≥3.5m才能覆盖单层挑高空间，普通2.5m以内款只适合室内窗户和外窗内侧87% similarUnverified擦2层以上落地窗需伸缩长度≥3米，室内普通窗户1.5-2米足够；选购时实际可用长度约为标称长度的90%（接头重叠占用）85% similarUnverified伸缩杆越长晃动越明显、擦拭时越难控制角度，日常3米以内窗户不必追求4米以上超长杆，反而牺牲操作精度78% similarUnverified拉伸长度选择：单个窗户宽度＜1.5m选2-3m拉花即可，1.5-2.5m选4m款，落地窗或整面墙布置需5m以上或多条拼接78% similar
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