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Terms containing two centered arch | all forms | in specified order only
SubjectEnglishChinese
bridg.constr.two centered arch双心拱
hydroel.st.two-centered arch双心拱
tech.two-centered arch二心拱
hydroel.st.Two-centered arch dam with variable-thickness arches at a nonsymmetrical canyon不对称峡谷中双圆心变厚度拱坝平面图

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