Unverified85% confidenceDecision RuleTime unknown
液体量取选择刻度朝上、俯视可读的斜面刻度（阿基米德式内壁刻度杯），需平视液面弯月面底部读数才准确，误差可控制在±5ml内
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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68% 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64% similarUnverified面盆龙头需匹配台盆开孔径，标准单孔径为33-35mm；台上盆配高身龙头（出水口离盆底≥17cm防溅水），台下盆配矮身龙头，选错会导致溅水或够不到水64% similarUnverified扇形角落架的伸缩范围通常为20-35cm可调，选购前需测量水槽两侧台面到墙角的实际直角边长，误差控制在±2cm内才能卡稳63% similarUnverified计量刻度多为桶身透明视窗或侧面标线，误差较大（±0.5kg），仅供大致参考，不能替代电子秤精确计量63% similar
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