drainage

• Drainage was to the north and individual channels bifurcate in that direction .
  整个水系向北排水，各个河道朝该方向分叉。
• The difference is mainly in the tone not in the drainage pattern or landform .
  所不同的主要在色调，而不在于水系型式或地形。
• A strike-valley sand is deposited in the drainage course of a subsequent stream valley .
  走向谷砂岩是在次生河谷水系中沉积的。
• Drainage water analyses may not indicate the composition of soil solutions accurately .
  排水分析不能正确地反映土壤溶液的组成。
• The endless variations of drainage pattern make descriptive characteristics difficult .
  水系型式的无限变化给描述特征带来了困难。
• The artificial improvement of drainage could soon lead to a marked loss in nutrients .
  采用人工排水措施可以迅速导致养分含量显著降低。
• Ground water is lowered by the drainage which can be caused by any deep excavation .
  任何一种深的挖方都能造成排水现象从而使地下水位降低。
• It may also provide drainage and give added protection against frost action when necessary .
  它具有排水作用，但在需要时也增加保护抗冻作用。
• When a sample is initially saturated with a wetting fluid, the process is called drainage .
  如果试样原始为湿润流体所饱和，则此过程称为排泄。
• But even the mosquito has been subdued by attention to drainage and by chemical sprays .
  但甚至蚊子也由于我们注意排水和化学喷雾而已被抑制住了。