Fen River is the second largest branch of Yellow River. Also it has the largest drainage area and is the longest river in Shanxi province.
汾河是黄河的第二大支流,也是山西省境内流域面积最大,流程最长的河流。
参考来源 - 玉门河水环境评价及排放总量控制研究In late Holocene, climate is dryer and cooler than that in middle Holocene, the precipitation of drainage area decreases. So runoff deceases, the width of riverbed becomes narrow.
进入全新世晚期,由于气候相对于全新世中期变得较为干燥,也较为温凉,流域来水减少,故流量减小,河床宽度变小。
参考来源 - 末次盛冰期以来南京以下长江河道的特征及演变Compared with vertical wells,horizontal wells has the advantages of shortening distance between wells,extending well drainage area,increasing critical coning flux,controlling the injection fluid and improving oil displacement efficiency.
与直井相比,水平井开发具有缩短油井井距,扩大泄油面积,提高临界锥流量,更好地控制注入流体、改善波及效率等优势。
参考来源 - 正韵律厚油层剩余油的水平井开发技术研究·2,447,543篇论文数据，部分数据来源于NoteExpress
N → another name for catchment area
这里是排水区。
Conditions that are correlated with accelerated deposition include drainage area, gully development, and texture of source material.
与加速沉积有关的条件包括流域面积，沟壑发育状况和土壤结构等。
Based on the data investigation; a transferring method to calculate losses among drainage area and administrative area is developed.
在数据调查的基础上，建立了流域和行政区域之间损失计算的转换方法。
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