Birth later period, cauline stalk lignification, and the pith ministry inside the bine is formed hollow.生育后期, 莖稈木質(zhì)化, 而莖內(nèi)的髓部則形成空心.The pith of this stemlike stele appears rather strongly like collenchyma tissue.莖狀中柱的髓顯得頗強健...
the pith of her argument她論據(jù)的核心Using a sharp knife, cut away the pith and peel from both fruits.用一把鋒利的刀削去兩種水果的外皮和中果皮。Both the rubber and the pith ball are negatively charged.這時,橡膠棒和木髓球兩者都帶負電荷....