叶片

• Straightening vanes can be used where long straight ways are not possible .
  在不可能安装较长的直管段情况下，可以来用导流叶片。
• Straightening vanes are effective in reducing the upstream pipe-length requirement .
  矫直的叶片对于减少上游直管的要求长度是有效的。
• The blades at its periphery throw off air centrifugally in a direction following the rotation .
  轮周叶片将空气沿着转动方向抛离轴心。
• The first sign of potassium deficiency is a white speckling or freckling of the leaf blades .
  缺钾的最初病症是叶片呈现白色斑痕或斑点。
• Thus, during a normal light-up there is a blade temperature charge of about 30 degrees/sec .
  于是，在正常点火时，叶片温度的变化率约为30度秒。
• Abscission of the tightly rolled, needlelike tips of the injured leaves quite often occurred .
  受毒害叶片经常出现针状的叶尖从蜷缩部分脱落下来。
• Erosive action is achieved at each contraction where a pair of opposing vanes are installed .
  在每个收缩区段中相对地设置一对叶片，都起到了冲洗作用。
• Leaf emergence was checked, and a considerable portion of the leaf was crushed in a close spiral .
  叶片抽出部分被抑制、且紧闭的螺旋状叶片大部分产生破裂。
• Certain aphids seem to prefer waxy leaves, whereas other species are repelled by them .
  有些蚜虫，看来喜欢有蜡质的叶片，而这种叶片对另一些蚜虫却有拒避作用。
• Trichomes are unicellular or pluricellular outgrowths from the epidermis of leaves, shoots, and roots .
  毛状体是叶片、枝条和根的皮层的单细胞或多细胞的外生物。