不同树龄杂交构树的APMP浆物理性能差别较小。
The APMP of xylem at different ages has small difference in physical properties.
将两段线粒体基因片断连接起来，以两种构树方法进行系统发育重建。
The molecular phylogeny using the combined sequences of cox3 and cytb gene was reconstructed.
对人工种植构树的化学成分、材性特点、纤维形态及制浆性能进行了研究。
The chemical composition, wood characteristic, fiber morphology and pulping performance of plantation paper mulberry were studied.
杂交构树APMP与适量的针叶木化学浆配抄，可以制得优等轻型纸和新闻纸。
The excellent light paper and newspaper could be made with the mixed pulp of APMP and soft wood chemical pulp.
通过讨论挑选数据的原则及存在的问题，介绍了几种构树方法的基本原理及步骤，并列举了它们的优缺点。
The present paper provides a brief introduction of the principles of data selection and tree-construction methods, and discusses about their advantage and disadvantage points.
所研究的豹蛛属的4个种在两种构树方法（NJ法和MP法）下所获得的分子系统树中均优先聚在一起，是较进化的类群。 与传统形态分类结果一致。
The 4 examined species of Pardosa was grouped together between two methods of phylogenetic analysis(NJ and MP), which is the most evolutive group, as same as recent taxonomy.
良构的XML文档是一个树的文本表示。
Recall that a well-formed XML document is the textual representation of a tree.
所选研究样本中，神经树的预测效率达100％，结果表明，该方法性能良好，可望成为药物构效关系分析的一种有效的辅助手段。
The results indicated that the performance of the neural tree method is effective, and therefore it might referred as an assistant technique for analysis of structure-activity relationship of drugs.
所选研究样本中，神经树的预测效率达100％，结果表明，该方法性能良好，可望成为药物构效关系分析的一种有效的辅助手段。
The results indicated that the performance of the neural tree method is effective, and therefore it might referred as an assistant technique for analysis of structure-activity relationship of drugs.
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