involucrum

基本解釋

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，會產(chǎn)生新骨（骨包殼）穩(wěn)定病變區(qū)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.
通過對美洲豚草、三裂葉豚草、多年生豚草的莖桿、葉片、花序、總苞等的特征比較研究，弄清它們的形態(tài)特點(diǎn)，為檢疫鑒定提供資料依據(jù)。
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.
葉幕內(nèi)的光能分布對總藝的分布也有重大影響，8年生植株總苞主要分布于相對光強(qiáng)13％以上的葉幕層，而15年生植株總藝主要集中于相對光強(qiáng)10％以上的葉幕層。

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