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- Bundle sheath The ring of parenchymatous or sclerenchymatous tissue, usually one cell thick, that surrounds the vascular bundle in an angiosperm leaf. 维管束鞘：在被子植物叶中，围绕维管束的通常是一层薄壁或厚壁细胞。
- The micrib belonging to bicollateral bundle is well developed.The bundle sheath is composed of idioblasts. 主脉发达，有异细胞组成的维管束鞘，具双生韧皮部。
- The vascular bundle consists of vascular bundle sheath,xylem,phloem and big parenchymatous cells. 维管束由维管束鞘、木质部、韧皮部和大型薄壁细胞组成。
- Palisade tissue is rich in saliferous vacuoles, while vascular bundle sheath is obvious. 栅栏组织富含含盐液泡泡，维管束鞘明显。
- The cells of the bundle sheath that surround the vascular tissues are large and contain specialized elongated chloroplasts that do not contain grana, but form starch grains. 它的特点为：围绕在维管组织外层的维管束薄壁细胞较大，并含有较大的叶绿体，这些叶绿体中不含基粒，但形成淀粉粒。
- The midvein bears three bundles.The veinlet bears one bundle sheath on the outer layer, with the typical feature of C4 pants. 中脉具3个维管束，小脉外具一层维管束鞘，具有典型的C4植物特征。
- The results showed: cells rounded the procambium bundle differentiated into bundle sheath at the initial stage of procambium bundle developing into vascular bundle. 结果表明，在叶内原形成层束分化成维管束初期，原形成层束外侧的一层细胞发育成维管束鞘。
- When the sieve tube members appeared in protophloem, there were a lay of procambium bundle cells reserved between the sieve tube members and bundle sheath. 原生韧皮部筛管产生时，其外方尚保留1-2层原形成层细胞，当后生韧皮部和木质部开始分化时，此层细胞分裂。
- There are 2-3 layers of long-column-shaped palisade tissue under the upper epidermis, and there are a great number of mechanical tissues which made up of vascular bundle sheath . 上表皮下方有2-3层长柱形的栅栏组织，在主脉大侧脉外方具有由大量机械组织组成的束帽或束鞘。
- Abstract The leaf anatomy and ultrastructure of the vascular bundle sheath cells of four ecotypes of reed (Phragmites communis Trin.) were observed with light and electron microscope. 植物改变其发育方式，对大气环境改变响应的能力是适应特殊生境的一个主要因素。
- CaMK was mainly accumulated in vascular bundle sheath cells of leaves and highly expressed in lateral root primordia and root tips.But the kinase was under detectable in other regions. 在营养器官中钙调素激酶主要分布于叶的维管束鞘细胞、侧根原基和根尖等部位，而其它部位没有检测到明显的分布。
- Bundle sheath cells around vascular bundle in the fertile anther were big and formula and few calcium ppts, whereas, that in the sterile anther were small and anomaly and containing many calcium ppts. 可育花药维管束鞘细胞体积大且形状规则，细胞内的钙颗粒很少，而不育花药维管束鞘细胞体积小且形状不规则，细胞内的钙颗粒较多。
- The leaf veins were dense, bundle sheaths had two layers, the outer layers were bigger parenchyma and the inner ones were smaller sclerenchyma. 叶脉稠密，维管束鞘两层，外层为较大型薄壁细胞，内层为较小的厚壁细胞。
- The veins of leases are parallel, and the vascular bundles have bundle sheaths. 平行脉序，维管束具有维管束鞘。
- The sheath of connective tissue enclosing a bundle of nerve fibers. 经来膜包裹住神经纤维的膜状结缔组织
- He collected a bundle of sticks. 他收集了一捆树枝。
- Put the dagger back in its sheath. 把短剑插回鞘内。
- That car must have cost a bundle. 这辆汽车一定值很多钱。
- That child is a bundle of mischief! 那孩子是淘气包！
- Forming or enclosed in a sheath. 有鞘的形成鞘的或装在鞘内的
