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。
The xylem of ferns and conifers contains only tracheids.
蕨类植物和针叶树的木质部仅含有管胞。
Study on the environment problem and countermeasure of xylitol industry in China
中国木糖醇行业环境问题和对策研究
Determination of Xylitol Content in Foods Using High Performance Ion Exchange Chromatography
离子排斥液相色谱法测定食品中木糖醇的含量
Basically they use different types of Africans Traditional music instruments such as xylophone made out of wood and Djimbe drum.
乐团表演所用的`乐器基本立足于非洲各式各样的传统打击乐器，如用硬木雕挖的木琴，世界闻名的金杯鼓等。
Percussion instrument ( eg drum, tambourine, xylophone)
打击乐器（如鼓、铃鼓、木琴）。