Unverified72% confidenceDecision RuleTime unknown
购买前测量马桶盖内圈尺寸：标准成人马桶内径约28-35cm，儿童训练坐便器内径约18-22cm，选'目标图案贴'时其瞄准点应落在内壁前1/3处，尺寸不匹配会导致图案被水淹或位置偏离
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72%
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Unverified选购前需测量马桶开口内径与长度，V型（前圆）马桶开口约35-38cm，U型（前方）约33-36cm，儿童辅助圈内圈需匹配，缝隙＞2cm易夹屁股或漏尿，＜0.5cm则安装困难89% similarUnverified选购前需测量马桶内圈开口的前后长度和左右宽度，普通成人马桶开口多为25-30cm×20-25cm，训练圈需覆盖此范围才不会在使用中滑入马桶内88% similarUnverified儿童马桶坐便圈需匹配马桶开口尺寸：V型/U型马桶开口内长约35-38cm，O型约37cm，购买前测量马桶内圈前后长度，坐便圈内径应比马桶开口大1-2cm才能稳固卡住不下坠87% similarUnverified儿童马桶圈需匹配马桶开口内径，普通V型/O型马桶开口内径多在14-18cm，选购前需实测马桶内圈前后距离与左右宽度，误差超过2cm会导致坐圈晃动或掉落85% similarUnverified坐圈内径应选27-28cm(标准马桶适配)，家有分体式或异形马桶需先测量马桶开口，内径过大孩子易掉入或坐不稳85% similar
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