1) trend vectors
粒径趋势
1.
An analytical procedure can be applied to transform the grain size trends into an image of trend vectors representing net sediment transport patterns.
沉积物粒度数据除可用来识别沉积环境的类型或判定物质运动方式之外,还可用于海洋环境中沉积物输运方向的研究,即将沉积物净输运方向与粒度参数的空间变化(粒径趋势)相联系。
2) grain size trend analysis
粒径趋势分析
1.
In this paper,the grain size trend analysis method is used to study the net sediment transport trend in the Quanzhou Bay,the sedimentation rate in the north channel of this bay is determined by using 210Pb dating method,and the changes in scour and sitting in this bay are calculated by means of comparison between nautical charts.
运用"粒径趋势分析"方法研究泉州湾泥沙净输运趋势,借助210Pb测年法测定湾内北水道的沉积速率,并通过海图对比计算海湾冲淤变化。
2.
The basic scientific problems for grain size trend analysis include:the procedure to subtract the information on transport;the method to determine which types of the trends contain transport information;and the conditions under which the method can be applied.
沉积学家将粒度参数的平面差异定义为"粒径趋势",并建立了以"粒径趋势分析"为基础的定性物质输运模型。
3) flow trend
径流趋势
1.
Grey analysissitus prediction for flow trend entering reservoir;
基于灰色拓扑理论水库径流趋势的预测
4) grain size trends
粒度趋势
1.
Analysis of grain size trends is a method which uses spatial changes in the parameters to infer sediments transport pathways.
粒度趋势分析法是通过粒度参数的空间分布反推沉积物净输运方向,近20年得到了快速的发展,应用于多种沉积环境,取得了满意的效果。
5) runoff trend forecasting
径流趋势预测
6) streamflow forecasting
径流趋势分析
1.
The first-order linear streamflow model is studied to develop stochastic analysis model, based on Markovian process, for the probability of streamflow forecasting.
以流域一阶线性径流模型为例，将模型中各参数扩展为随机变量，推导出基于马尔柯夫过程的可用于流域径流趋势分析的随机模型，并由Ｆｏｋｋｅｒ－Ｐｌａｎｃｋ－Ｋｏｌｍｏｇｏｒｏｖ（简写ＦＰＫ）方程产生径流概率密度函数。
补充资料：调和平均粒径
分子式：
CAS号：
性质：在混合颗粒中，直径为d1、d2、…dn的颗粒的质量分率，分别为x1、x2、…xn，则混合颗粒的调和平均直径可按下式计算：
CAS号：
性质：在混合颗粒中，直径为d1、d2、…dn的颗粒的质量分率，分别为x1、x2、…xn，则混合颗粒的调和平均直径可按下式计算：
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条