bract scale
常见例句
- There was no inverted vascular bundle developed in the bract scale of Thuja occidentals.
崖柏属雌球果的苞鳞中没有倒转的维管束形成。 - In Calocedrus and Platycladus, only a single series of inverted vascular bundles were generated in the adaxial side of the bract scale;
在苞鳞中只形成一组倒转的维管束，如侧柏属和翠柏属； 返回 bract scale