干区 英文名称： stem region 定义： 鞘的后部，没有空腔。
非饱和带裂隙中的饱和区和排干区可以用一个离散的气-水界面分隔开。
A discrete air-water interface is used to separate the saturated zones from the drained zones within each single fracture of fracture network.
与此相似，当管道通过与干亚粘土接壤的湿粘土区时，湿粘土区钢表面相对于干土区钢表面为阳极。
Similarly, when a pipeline transverses moist clay areas adjacent to dry loam, steel surfaces in the wet area become anodic to steel surfaces in the dry area.
方法：试验采用单因素随机区组设计，定株定期进行调查测定，收获后测各器官干重、产量和主要有效成分含量。
Method: Single factor randomized block design was applied, plant samples were collected and investigated periodically, and dry weight, production and the main active ingredient content were measured.
应用推荐