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Presents the theoretical calculation formula and performs experiments of frictional resistance loss for PP-R hot water pipes. 给出了PP-R热水管沿程阻力损失的理论计算公式,并对其进行了实验研究。
Parameter Identification and Analysis of Tube Friction Resistance Loss in the Post-tensioned Pre-stressed Concrete Girders 后张预应力混凝土梁管道摩阻参数识别与分析
friction resistance loss 摩阻损失
Test Method and Data Process of Frictional Resistance Loss in the Post-tensioned Pre-stressed Tube 后张梁管道摩阻损失测试技术与数据处理
Round pit pattern increase friction resistance,pjrevent from slipping of goods. 圆坑花纹摩擦系数大，运行中增加阻力，防止物料下滑。
The jacking force consists of the face pressure and friction resistance. 顶管顶力是由迎面阻力和侧摩阻力组成的,影响顶力的因素很多。
Feature: Round pit pattern increase friction resistance, prevent from slipping of goods. 特征：圆坑花纹磨擦系数大，运行中增加阻力，防止物料下滑。
In superplastic forming, bulk metallic glass has larger surface friction resistance than ordinary metal alloys. 大块非晶合金在超塑性成形时呈现出比一般金属材料更大的摩擦阻力。
The friction resistance is mainly due to the adhesion and the deformation hysteresis resistance of microfibrils. 腹鳞的摩擦阻力主要是粘着力和微凸体变形的滞后阻力。
The new muffler device has simple structure,it has lesser effect on the resistance loss of chief ventil... 该消声装置结构简单,对主要通风机的阻力损失影响小,防尘、防潮及降噪效果明显,可广泛的应用于煤矿主要通风机的消声降噪。
Both of them are characterized by abrasive wear, but the Ti40Zr40Ni20 bulk quasicrystal manifests abetter friction resistance. zr4oNiZo准晶的耐磨性更好。 Ti40Zr40NiZ。
For example, the Capacity of Jet Fanin tunnel,the flux distribution and resistance loss in the chimney. 重点研究了射流风机在隧道内的的调压性能，竖井三通的气流分布以及局部阻力损失。
The strata melts to sink,and producing strata to press newly,the negative friction resistance is produced around the venical pit. 地层融陷,形成新地压,在竖井周围,产生负摩阻力;第三系泥岩受承压水侵蚀膨胀,造成井壁破裂。
When the pipe diameter ratio varies a little，the local resistance loss of sudden contraction changes insignificantly. 存在一个最佳弯径比，使得水平弯管的局部阻力损失最小。
The anchorage force of consolidated anchorage with prestressed bolt is actually the friction resistance between sand and the wall of drill hole. 砂固结预应力锚杆的锚固力是由砂体与锚孔壁之间的摩擦力提供的。
This energy is then dissipated by dry frictional resistance. 这种能量被干摩阻力所耗
The less-sheared regions caused by friction resistance are observed at lower and top parts, which are symmetric and gradually extend to the inner part along the sample longness. 受摩擦阻力的影响，试样顶部和底部均出现了滞变区，该区域呈轴对称分布且沿试样长度方向逐渐向试样芯部扩展；
According to the analysis on pressure of three kinds of duct systems,concludes that the total pressure of a fan should be equal to the resistance loss of the duct system. 通过对三种风道系统的压力进行分析,认为应根据风机全压等于风管系统阻力损失来选择风机。
On the basis of three-dimensional finite element method,the lateral friction resistance,the tip resistance and socket length of rock-socketed pile are analyzed and calculated. 用三维有限单元法对嵌岩灌注桩的桩侧阻力、端阻力、嵌岩深度进行了分析计算。
The predictions of resistance loss using CFX for two configurations of silencers are compared with experimental results, and the relative error is within 5%. 用CFX计算了两种结构水消声器的阻力损失，并与实验结果进行了对比分析，其误差控制在5%25以下。