Firs, spruces and pines are conifers.冷杉 、 云杉和松树都是针叶树.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.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....
这种做法使我们可以时常注意所出现各项的数量级.This procedure allows us to keep track of the magnitudes of the terms that occur.结果是该参量相当大,其数量级为10.It turns out that this constant is rather large - on the order of 10.纳米超薄膜指薄膜厚度处在纳米数量级的薄膜.Nanostru...
She let the long cone of ash hang at the end of her cigarette.她让长长的烟灰留在烟头上。The little boy is licking the ice-cream cone.小男孩在舔着冰淇淋蛋卷。…a rock about eight feet high, shaped like a truncated cone.高约八英尺，形状像锥台的岩石The design pri...