对于顺序输送,目前通常采用以平均流速代替管道的实际运行流速来计算混油量,在流量变化较大的情况下这种计算是不准确的。提出了一种交流速下混油量的计算方法,该方法考虑了
在东南极格罗夫山地区哈丁山南岭发现的三个土壤地点,是人类首次在东南极内陆地区发现的土壤,属南极寒漠土壤（cold desert soil）,其主要特征是地表发育漠境砾幂（desert pavement）,土壤中含有丰富的盐分,具有较强的染色作用,土壤呈弱酸性,不含有机质.据 1:5的土水提取液分析,主要阳离子为 Mg2+和 Na+,其次是 K+和 Ca2+,主要阴离子为 SO42-,其次为Cl-和
This paper provides an overview of alloy and process developments in aluminum and magnesium castings for lightweight automotive applications. Wear-resistant alu
百合种球贮藏环境是根据百合种球生理特性所设计的,要达到这一要求,必须进行环境的合理布局,实现环境温度均衡、温差小、并保持较好的环境气体流动。因此,在冷库建设中,库内
采用回映应力更新算法,编写了基于伏斯列夫面的超固结黏土本构关系模型子程序,嵌入非线性有限元软件ABAQUS.通过对单元试验进行三轴压缩、三轴伸长及平面应变等问题的模型预
Using a regional climate model MM5 nested with an atmospheric global climate model CCM3, a series of simulations and sensitivity experiments have been performed
In this paper, experiments of one-dimensional plane plate impact on polymethylmethacrylate (PMMA) targets are conducted, in which dynamic transverse stresses in
The aim of this investigation is to research the initial ignition of the underwater-launching solid rocket motor. The MIXTURE multiple-phase model was set to si
为了解决当前温室监测系统存在的布线复杂、节点功耗大、部署不灵活、管理不便等问题,设计了一种基于无线传感器网络的温室环境信息监测系统.以CC2430为核心开发无线传感器节
In particle sizing by light extinction method, the regularization parameter plays an important role in applying regularization to find the solution to ill-posed