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Terms containing heel of frog | all forms | in specified order only
SubjectEnglishChinese
railw.heel end of frog辙叉跟端
railw.heel length of frog辙叉跟长
tech.heel length of frog辙叉跟长度
tech.heel of frog辙叉跟
tech.heel spread of frog辙叉跟开口距
tech.heel spread of frog辙叉跟宽