At ear emergence, pasture still retains a considerable amount of leaf and its digestibility is reasonably high . 出穗时的牧草仍保留全数量的叶片，其可消化率很高。
These sleeves sweep the flakes around the compartment to an opening where they drop to the next compartment . 这些叶片沿着间室搅动胚片，并使其在开口处落入下一间室。
In many plants, including most tree crops, nitrate nitrogen does not usually occur in the leaves . 在一些植物中，包括绝大多数的木本作物，硝态氮并非经常存在于叶片中。
A rubber ball attached to a paddle by an elastic string loses energy as it flies away from the paddle . 一根弹性绳把一只皮球拴在一块叶片上当球飞离叶片时，球失去能量。
One good feature about this type is that the blades do not pick up matter carried in the air stream, as curved blades do . 这种叶片型式的优点是它不象曲型叶片那样易于吸聚气流载负的物质。
Fluoride treatment included both excised leaves cultured in nutrient solutions and leaves from plants fumigated with hf . 氟化物处理既包括培养在营养溶液中的切离叶片和HF熏气的植株上来的叶片。
To our knowledge, the effect of genetic variation in leaf angle and dispersion has not been adequately quantified in trees . 据我们所知，在叶片角度和分布上遗传变异的效应，在树木中还没有被适当地定量研究过。
The large-leaved rhubarb and cabbage plants slept too, their broad limp surfaces hanging in the sun like half-closed umbrellas . 大叶子的大黄和卷心菜也都睡着了，它们那些宽阔发蔫的叶片在日光下低垂，好像半开半闭的伞。
Leaf-feeding resistance to this insect is conditioned by increasing tissue concentrations of benzoxazolinones and their precursor hydroxamic acids . 对这种害虫取食叶片的抗性决定于组织中苯并唑啉酮及其前体氧、肟酸浓度的增加。
