Sapwood contains xylem vessels, but not as strong as heartwood.
边材含有木质导管，但不如中心木质那样坚硬。
One of the tubular conductive vessels in the xylem of vascular plants.
导管维管植物的木质部中的管状引导管之一
Observation and Study of Vessel Elements of Secondary Xylem in Bombax malabaricum;
木棉Bombax malabaricum次生木质部导管分子观察研究
Observation and Study of Vessel Elements of Secibdart Xylem in Aquilaria Sinensis;
白木香Aquilaria sinensis次生木质部导管分子观察研究
Annular thickening Rings of thickening laid down on the inner wall of protoxylem vessels and tracheids.
环状加厚：原生木质部导管和管胞的内层环状??厚。
The part of the primary xylem that differentiates after the protoxylem and is characterized by broader vessels and tracheids.
后生木质部初生木质部中不同于原生木质部的一部分，以更宽的导管和管胞为特征
Secondary xylem consists of pitted vessels, parenchyma fibers and rays.
次生木质部由孔纹导管、薄壁组织及射线所组成。
Any of various vascular plants, including seed plants and ferns, having a conducting system of xylem and phloem.
导（维）管植物任何种类的维管植物，包括种子植物和蕨类植物，具有木质部和韧皮部导管系统
Xylem Embolism Occurrence in Wheat Plants Relating to Physiological Basis for Water Saving and Drought Resistance;
小麦木质部导管气栓塞发生特性及节水抗旱生理基础研究
The vessel elements of secondary xylem in Litchi chinensis are observed and studied by bio-microscope image analysis system and micrography.
运用细胞图像分析系统及显微照相的方法，对荔枝次生木质部导管分子进行了观察研究。
Video Cytological Image Analysis System and micrography were adopted to examine vessel elements in secondary xylem of Phyllanthus emblica.
运用细胞图象分析系统及显微照相的方法，对余甘子次生木质部导管分子进行观察研究。
5.IBA treatment can promote the root elongate growth and the root lignification of M.hupehensis Rehd.
5.吲哚丁酸能够促进湖北海棠根系导管的分化,使根系的木质化程度增加。
A cell in the xylem of vascular plants.
管胞在维管植物的木质部中的细胞
conduct, of porous common pottery (excl. insulating electric conduit tubing)
普通陶质多孔导管（不包括电绝缘导管管材）
Effect of Beating Levels on the Morphology of Vessel Cell in Bleached Acacia Kraft Pulp
打浆对相思木漂白KP浆导管形态的影响研究
MAIN PRODUCTS： Wood Activated Carbon(Powdered), Wood Activated Carbon(Granular), Nut Shell Activated Carbon, Coal Activated Carbon.
主导产品：木质粉状活性炭、木质颗粒活性炭、果壳类活性炭、煤质活性炭。
The supporting and water-conducting tissue of vascular plants, consisting primarily of tracheids and vessels; woody tissue.
木质部在维管束植物中的起支撑作用和输水作用的组织，主要由管胞和管道组成；木质组织
newly formed outer wood lying between the cambium and the heartwood of a tree or woody plant; usually light colored; active in water conduction.
树木或木本植物形成层和心材之间的新生木质，通常色泽浅，水分传导性强。