resin duct的用法和樣例：
例句
- They are usually secreted by special cells into long resin ducts or canals.
樹(shù)脂通常隱藏在特定的細胞中，這些細胞形成長(cháng)的樹(shù)脂道或樹(shù)脂管。 - Resin was synthesized by the active cells in the cambium zone including secondary xylem cells, cambium cells, secondary phloem cells and ray cells.
其形成的部位為當年的次生木質(zhì)部，樹(shù)脂道是由最幼嫩的木質(zhì)部部分細胞分化形成。
