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通管孔;通渠孔;清理孔
meaning in English
cleaning eye
rodding eye
Related Words
横渠
土渠
引渠
船渠
湍流渠
排水渠
引水渠
修渠
函渠
石渠
通管比, 管心针
通管孔;通渠孔
通管孔盖
通管器
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