短語詞組短語bicollateral bundle 雙韌維管束bicollateral vascular bundle [植]雙韌維管束;雙韌型維管束ectoxylar bicollateral bundle 外木質(zhì)復并立維管束bicollateral vascul bundle 雙韌維管束ectophloic bicollateral bundle 外篩復并立維管束amphiphloic bicollateral vascular bundle 雙韌皮并立維管束ectocribral bicollateral bundle 外篩雙韌維管束 返回 bicollateral