conifers的例句（conifers在句子中的用法）

• Firs,spruces and pines are conifers. 冷杉、云杉和松树都是针叶树。
• This region contains areas which are prinarily covered with either high density conifers or meadow hardwoods. 该地区,主要的植被覆盖是高度的针叶树类或草地阔叶树类.
• A variety of conifers and hardwoods makes up the bulk of the vegetation. 大部分植被由各种针叶树类和阔叶树类构成.
• 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.
• Firs, spruces and pines are conifers. 冷杉 、 云杉和松树都是针叶树.
• Several other conifers produce small male catkins. 其它几种针叶树产生小雄花序.
• Sarvas discusses the nature of the " lethal load " in conifers. 萨维斯 讨论了针叶树的致死的基因性质.