medullary ray

简明释义

髓线

英英释义

例句

1.When examining hardwood species, the presence of medullary ray 髓射线 is a key feature to identify.

在检查硬木种类时，髓射线 medullary ray 的存在是识别的重要特征。

2.In the cross-section of a tree trunk, the medullary ray 髓射线 can be seen radiating from the center outward.

在树干的横截面上，可以看到髓射线 medullary ray 从中心向外辐射。

3.The medullary ray 髓射线 plays a role in the storage and transport of nutrients within the plant.

髓射线 medullary ray 在植物内营养物质的储存和运输中起着重要作用。

4.The medullary ray 髓射线 contributes to the overall strength and durability of the wood.

髓射线 medullary ray 有助于木材的整体强度和耐用性。

5.The structure of the wood reveals distinct patterns of medullary ray 髓射线 that are crucial for understanding its growth.

木材的结构显示出明显的髓射线 medullary ray 图案，这对于理解其生长至关重要。

作文

The structure of trees is a fascinating subject that has captivated scientists and nature enthusiasts alike for centuries. Among the many components that make up a tree, one of the most intriguing is the medullary ray, which plays a crucial role in the tree's overall function and health. Understanding the medullary ray is essential for anyone interested in botany or forestry, as it provides insight into how trees transport nutrients and maintain their structural integrity.The medullary ray is a radial structure found within the wood of a tree. These rays are composed of parenchyma cells, which are living cells that facilitate the storage and movement of substances like water and nutrients. The primary function of the medullary ray is to serve as a conduit for the lateral transport of materials across the tree, connecting the inner and outer parts of the wood. This is particularly important because trees need to distribute water and nutrients from the roots to the leaves while also transporting sugars produced in the leaves back down to the roots.In terms of anatomy, the medullary ray can be observed in cross-sections of wood, where they appear as thin lines radiating outwards from the center of the tree. These rays can vary in size and number depending on the species of tree, which can affect the overall appearance and texture of the wood. In some trees, such as oak, the medullary ray can be quite prominent, giving the wood a distinctive figure that is highly sought after in furniture making and woodworking.Additionally, the medullary ray has implications for the tree's ability to store carbohydrates. During periods of high photosynthetic activity, such as in the spring and summer, trees produce excess sugars that can be stored in the parenchyma cells of the medullary ray. This storage capability allows trees to tap into these reserves during times of dormancy or when resources are scarce, such as in the winter months. Therefore, the medullary ray not only aids in transport but also plays a vital role in the tree's survival strategy.Furthermore, the study of the medullary ray extends beyond just understanding tree biology; it also has practical applications in the field of forestry and conservation. By examining the health and structure of the medullary ray, researchers can gain insights into the overall health of a tree and its ability to withstand environmental stressors such as drought, disease, and climate change. This information can inform management practices aimed at preserving forests and promoting sustainable timber production.In conclusion, the medullary ray is a remarkable feature of tree anatomy that serves multiple functions, from nutrient transport to carbohydrate storage. Its significance in the life of a tree cannot be overstated, as it contributes to the tree's growth, health, and resilience. For anyone interested in the intricate workings of trees, a deeper understanding of the medullary ray opens up a world of knowledge about the complexities of plant life and the vital role trees play in our ecosystems. As we continue to explore and learn about these fascinating structures, we enhance our appreciation for the natural world and the importance of conserving our forests for future generations.

树木的结构是一个迷人的主题，几个世纪以来吸引了科学家和自然爱好者的关注。在构成树木的众多组成部分中，最引人入胜的之一就是髓射线，它在树木的整体功能和健康中发挥着至关重要的作用。理解髓射线对于任何对植物学或林业感兴趣的人来说都是必不可少的，因为它提供了树木如何运输养分和维持结构完整性的洞察。髓射线是树木木材中发现的一种放射状结构。这些射线由生活细胞（称为薄壁细胞）组成，这些细胞促进水和养分等物质的储存和移动。髓射线的主要功能是作为树木内外部之间材料横向运输的通道，连接木材的内外部分。这一点特别重要，因为树木需要将水和养分从根部输送到叶子，同时还要将叶子产生的糖运输回根部。在解剖学上，可以通过木材的横截面观察到髓射线，它们呈现为从树中心向外辐射的细线。这些射线的大小和数量因树种而异，这可能会影响木材的整体外观和质地。在一些树木中，例如橡树，髓射线可能相当显著，使木材具有独特的纹理，这在家具制作和木工中备受追捧。此外，髓射线与树木储存碳水化合物的能力有关。在高光合作用活跃的时期，例如春季和夏季，树木会产生多余的糖，这些糖可以储存在髓射线的薄壁细胞中。这种储存能力使树木能够在休眠期间或资源匮乏时（例如冬季）利用这些储备。因此，髓射线不仅有助于运输，还在树木的生存策略中发挥着至关重要的作用。此外，髓射线的研究不仅限于理解树木生物学；它在林业和保护领域也具有实际应用。通过检查髓射线的健康和结构，研究人员可以深入了解树木的整体健康状况及其抵御环境压力（如干旱、疾病和气候变化）的能力。这些信息可以为旨在保护森林和促进可持续木材生产的管理实践提供参考。总之，髓射线是树木解剖学中一个显著的特征，具有多重功能，从养分运输到碳水化合物储存。它在树木生命中的重要性不容小觑，因为它有助于树木的生长、健康和韧性。对于任何对树木复杂运作感兴趣的人来说，更深入地理解髓射线为我们打开了一个关于植物生命复杂性的知识世界，以及树木在生态系统中所扮演的重要角色。随着我们继续探索和学习这些迷人的结构，我们增强了对自然界的欣赏，以及保护我们的森林以造福后代的重要性。