Likewise, certain angiosperms, for example, some Eucalyptus species, will present few seed harvesting problems. 同樣某些闊葉樹(shù)種，例如一些桉樹(shù)類(lèi)，采種的問(wèn)題不多。
From the leaf anatomic stucture, the ability of controlling water transpiration in conifer trees species withdeveloping cutin layer and deep stomia was stronger than in broadleaf. 從葉片解剖構造的主要特點(diǎn)看，針葉樹(shù)種的角質(zhì)層發(fā)達，氣孔下陷，控制水分散失的能力強于闊葉樹(shù)種。
