Unverified80% confidenceDecision RuleTime unknown
深碗（深度＞8cm）优先选浮球或红外式，超声波在深窄容器内易受碗壁反射干扰导致读数跳变
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80%
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Long-term
Relevance
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Unverified承重台面直径需大于水碗底座直径至少2cm，否则碗放歪会导致重心偏移造成读数漂移；购买前需测量现有水碗底径70% similarUnverified桌面深度＜50cm时优先选前出低音孔（front port）的有源箱，后出孔机型贴墙摆放会因反射造成低频浑浊，需离墙≥10cm，小桌面难以满足68% similarUnverified内部有效空间进深≥30cm、宽度≥40cm才能容纳大振膜电容麦+防喷罩+悬臂支架，进深不足会导致麦克风离后壁过近产生近场反射，反而增加混响67% similarUnverified变色型探针插入位置应距植株根球3-5cm、深度为盆深的1/2-2/3，插在盆壁边缘会因浇水路径不均导致读数偏干，购买时选带深度刻度或定位环的款式更准67% similarUnverified带延长探针线（1-2米）的分体款可将主机放在高处、探针贴地，实现覆盖多个低点或狭窄夹缝（如洗碗机底、热水器下方）；一体式贴地款仅能监测单一点位65% similar
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