involucrum

基本解释

If the periosteum remains viable, new bone (involucrum) will form to stabilize the area, and sequestrae may be partially or completely resolved.
如果骨膜仍然有血供，会产生新骨（骨包壳）稳定病变区并且死骨可部分或完全吸收。
A comparative study on the morphological characteristic of stem, leaf, anthotaxy and involucrum of three kinds of ragweed weed—Ambrosia Artemisiifolia L.
通过对美洲豚草、三裂叶豚草、多年生豚草的茎杆、叶片、花序、总苞等的特征比较研究，弄清它们的形态特点，为检疫鉴定提供资料依据。
Light intensity influenced significantly involucrum, which distributed in the canopy with the relative light intensity hither than 13 % of 8-year-old boos trees 10% of 15-year-old trees.
叶幕内的光能分布对总艺的分布也有重大影响，8年生植株总苞主要分布于相对光强13％以上的叶幕层，而15年生植株总艺主要集中于相对光强10％以上的叶幕层。

a ring of bracts at the base of an inflorescence in such plants as the composites