在成熟木材细胞中发现细胞核是木材解剖学的新发现。
The discovery of nuclei existing in mature xylem cells is a new one in Wood Anatomy.
成熟木材细胞中的细胞核属于营养核，是一个稳定的特征。
Nuclei in mature xylem cells belong to nutritious nuclei and they are stable.
通过不同林龄木材物理性能和纤维形态、化学分析及纸浆造纸性能确定工艺成熟龄。
The technical maturity of the plantation was determined according to physical property of wood, fibre form, chemical components, and pulp characters.
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