To make leaf vein with sharp work stick.
用尖棒在叶片上划出细密直纹。
The structure of leaf vein is complicated.
叶脉结构较为复杂，主脉发达。
Flatten each leaf and fold lengthwise so that the underside of the leaf is folded inside and main leaf vein forms the top ridge of the fold.
纵向拼合每个叶和褶皱，叶底面内折叠和主叶脉形成顶部的褶皱脊。
Has to match the whole world river one half water, flows in the blood vessel of the mankind and animal, and flows among the rhizome and leaf vein of plant.
有相当于全球河流一半的水，流淌在人类和动物的血管里，流淌在植物的根茎、叶脉之中。
Expression pattern of trans-activated virion sense promoter was similar to that of complementary sense promoter with the high activity in both mesophyll and vascular of leaf vein.
其表达方式与互补链基因启动子相似，即在叶肉及叶脉维管组织均有较高的活性。
The regenerated plants were transplanted in a field. Variations of leaf vein color and root skin color were observed in 0.500 % and 3.944 % of the regenerated plants, respectively.
将这些再生植株移栽到大田，对其进行形态学特征观察，发现部分植株的叶脉色和薯皮色发生了变异，分别占0.500%和3.944%；
Vein density is a sign of how much a leaf has invested in the network.
叶脉密度标志着树叶在这个网状结构中投入了多少。
They discovered this by injecting fluorescent dye into leaves to see if the vein network could distribute the dye to all parts of a leaf that had been damaged.
他们的研究方法是，向叶片内注射荧光染料，看叶脉网络是否能够将染料输送到各处受损部位。
Although leaf photosynthesis of this weed is of the C3 type, a C4-like vascular bundle full of chlorophyll was observed in the main vein of the leaf and young stems.
尽管薇甘菊叶片为典型C3植物特征，结果发现了茎以及主叶脉内存在类似C4途径的、具有丰富叶绿体的维管束鞘结构。
A rib or a riblike part, such as the midrib of a leaf or a thickened anterior vein or margin of an insect's wing.
肋骨，叶脉：肋骨或肋骨状部分，例如叶子的中脉或昆虫翼的较厚的前部线或边。
The leaf blade consists of epidermis, mesophyll and vein, which is iso-bilateral leaf.
叶片都包括表皮、叶肉和叶脉，且为等面叶。
But every vein of the green leaf, every line of the peony, just told me with complete sureness how carefully and how devotedly you were drawing then!
但绿叶的那一道道脉络，牡丹的那一丝丝线条，都确凿无疑地告诉我你在画它们时是多么认真多么专注！
Vein One of the vascular bundles in a leaf. The pattern in which the veins are arranged in a leaf is called the VENATION.
叶脉：叶片中的维管束结构。在叶片中，所有叶脉排列的方式称脉络。
A trace of the vein is clearly visible, covered with "leaf", as the withered old lady's hand.
一丝丝的脉络清晰可见，上面覆盖着“叶肉”，像老太太枯槁的手。
However, it can take a beetle an hour and a half of careful vein cutting to prepare a small leaf that takes it only a few minutes to eat.
然而，切断叶脉来准备一份只用几分钟就吃完的晚餐需要甲壳虫一个半小时的小心工作。
ECO-Mn may prevent and cure the symptom include delicate vein and leaf tine fade, foliage yellowing result in lack of Mn.
本品可预防和治疗因缺锰造成的嫩叶脉间及叶尖褪绿、叶片发黄等症状。
This strips the vein out of the leaf and prepares it for storage.
这条叶静脉和准备用于存储。
Leaf anatomy results revealed the central vein lacks both clear cells and the adaxial small vascular bundle in dl2 mutant, which seemed to cause the drooping leaf phenotype.
对叶片的解剖学分析发现突变体中脉缺少细胞和近轴小维管束，导致披叶表型的产生。
Leaf anatomy results revealed the central vein lacks both clear cells and the adaxial small vascular bundle in dl2 mutant, which seemed to cause the drooping leaf phenotype.
对叶片的解剖学分析发现突变体中脉缺少细胞和近轴小维管束，导致披叶表型的产生。
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