知識(shí)貝殼
知識(shí)貝殼
所屬欄目：英漢雙解生物學(xué)
The organized loss of part of aplant,usually a leaf,fruit,or unfertilizedflower. An abscission zone occurs at the baseof the organ. Here a separation layer (ab-scission layer) is formed by breakdown orseparation of cells and final severance occurswhen the ......（本文共 353 字 ） [閱讀本文] >>