By that time the choices of settlements for jiu - she type and kavalan were influenced by river system but not sea invasion 旧社类型与噶玛兰族聚落位址的选择不再受到海侵的影响，转以河系分布作为考量的因素。
3.
The new observations paint the clearest picture yet of the milky way ' s interior and reveal the apparent bar in unprecedented detail 新观测为我们勾画了迄今最清晰的新河系内部图像，并且在前所未有的细节上展现了棒状外观。
4.
This paper presents a forecasting model of runoff to wuyandong subterranean stream system by bp ann based on the data of precipitation and flux in luota , west hunan 摘要采用湖南洛塔地区屋檐洞地下河系统降水径流资料训练bp人工神经网络，建立了该系统的径流预测模型。
5.
Contribution percentages about precipitation to runoff were calculated to divide rapid flow and slow flow in the model , the proportion of them of wuyandong subterranean stream system is 2 to 3 通过降水对径流的贡献率进行快速流和慢速流的划分，屋檐洞地下河系统的快速流与慢速流比例接近2 ： 3 。
6.
The relaxation iterative method of branch flow in tree - type river systems is extended to the loop - type river networks , which can turn the problem of any complex river networks hydraulics into the problem of a series of single river hydraulics ; 4 将树状河系支流流量的松弛迭代方法推广为环状河网支流流量的松弛迭代方法，从而实现了对于任意形式河网的复杂水力计算问题都化为一系列的单一河道的简单水力计算问题。
7.
( 3 ) the definition of soil series applied the method of direct nomenclature ( eg . qingjiang series ) , searches of soil series was the order : soil structure - the texture of hydragric epipedon - the proportion of clay and salt ( eg . apl - ap2 - g - clay loam - 0 . 54 ) , 10 typical soil sections were classified 10 soil series ( eg . qingjiang series beihe series ) and belonged to 5 subgroups and 4 groups of hydragric anthrosols ( 3 )土系采用直接命名法(如：清江系) ，其检索采取剖面构型+表层优势质地+粘砂比的性态检索顺序(如： ap1 - ap2 - c +粘壤土+ 0 . 35 ) ，被研究的10个典型土壤剖面被划分为清江系、北河系等10个土系，分别隶属于5个水耕人为土亚类、 4个水耕人为土土类。
