The inside structure of the timber and external characteristic are besides relating to hereditary properties of the poplar, still have close relations with the acquired ecological environment that grows.

 
  • 木材的内部结构和外部特征除了与杨树的遗传性状有关外,还与后天生长的生态环境有密切的关系。
今日热词
目录 附录 查词历史