Unverified80% confidenceFactTime unknown
灯串长度与灯泡数量需匹配需求：铜线灯每米约10-20颗更密更柔和，节日大灯串每米约3-5颗；标注'20米'时务必确认是否含引线长度（引线可能占1-3米不发光）
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Unverified灯串灯泡密度以每米灯珠数衡量，营造氛围星星点点选10-15灯/米即可，作为主照明或需连续光带效果应选30灯/米以上（LED灯带常见60灯/米或120灯/米）87% similarUnverified灯串长度与树周长的匹配：缠绕式布线所需灯串长度≈树高×3至树高×4倍，1.8米树建议选购6-8米灯串；仅铜线灯（fairy light）可缩短至树高×2.5倍86% similarUnverified常见照片灯串规格：2米配20颗灯珠、5米配50颗、10米配100颗，灯珠间距约10cm；铜线灯串线径约0.4-0.5mm85% similarUnverified铜线灯串（fairy lights）灯珠密度可达每米10-20颗且线材柔软易造型，适合缠绕瓶罐和字母框；橡胶线灯串灯珠间距大但更耐用，适合户外拉线85% similarUnverified灯珠间距10cm左右的密排款光带连续、氛围感强但同长度灯珠更多耗电快；间距15-20cm的稀疏款省电、缠绕大范围树木更划算，选购时看灯珠数量而非仅看长度84% similar
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