查询词典 dynamic friction

With the raise of a calculation method on dynamic friction coefficient of downhole tubing, the calculating accuracy of vertical conduit flow pressure is strengthened for a gas well, which promotes the dynamic analysis and prediction on gas well production.

气井井下油管动态摩阻系数计算方法的提出，提高了气井垂管流动压力计算的精度，对气井生产动态分析和预测起到了很好的推动作用。

At impacting condition, rigid polyarethane foam, rubber, and MDF concrete exhibited static friction coefficient of 0.29, 0.285, 0.28 - 0.29, and dynamic friction coefficient of 0.25,0.24, 0.23 respectively when running against aluminum lever.

在冲击加载条件下硬质聚氨酯泡沫塑料与铝杆之间的静摩擦系数为0.29，动摩擦系数为0.25；硅橡胶与铝杆之间的静摩擦系数为0.285，动摩擦系数为0.24；MDF水泥与铝合金杆之间的静摩擦系数为0.28～0.29，动摩擦系数约0.23。

Through the experiment research on the friction of the disk brake of the shaft winding in the different pressure,surface rough and oil pollution,the static and dynamic friction of the disk brake were calculated.

通过对矿井提升机盘式制动器在不同压力、表面粗糙度和油污状态下闸瓦和闸盘之间的摩擦力的试验测定，进一步得出闸瓦、闸盘间静摩擦系数和动摩擦系数。

In the current release, only dynamic friction is calculated. Static friction is planned for a later release.

在目前的版本中，只能计算出动力学摩擦力，静摩擦力计划在稍后的版本发布。

A dynamic friction model is build and a friction observer is designed for ordinary position servo system.

从分析结果得知影响伺服系统低速性能的主要因素是摩擦力。因此，要提高电液伺服系统的低速性能，必须对摩擦力进行补偿。

Comparatively, the dynamic friction models can describe the friction more completely, with their complicated forms, which makes it difficult to identify related parameters.

再次， 简要概述了摩擦建模对机械系统动力学行为的影响，以及在高精度定位系统的控制中的作用。

Next, a few important friction models in common use are discussed, including six static and seven dynamic friction models. The forms, characteristics and applicability of these models are discussed in detail.

其次， 系统地介绍了几种较为重要的、常用的摩擦模型，包括6种静态摩擦模型和7种动态摩擦模型，并对每一种模型的构成，特点和适用范围等进行了较为详细地论述。

The results of calculation show that these algorithms are succinct, efficient, accurate, reliable, and they can accomplish the optimal design of integrated layout and connection scheme with high intelligence.Adopting the sectionalized lumped parameter method with dynamic friction, the dynamic performances of the typical segments in lineweb, i.e.

作为校验线网性能约束的后续环节，本文引入包含动态摩擦的管路分段集中参数键合图模型，对集成块线网中存在的短管、直角拐弯、分支管路、工艺孔容腔等典型结构进行分析，建立起具有典型结构的线网的分段集中参数键合图模型，并通过数字仿真和物理实验得到验大连理工大学博士学位论文证。

An experiment is made on dynamic friction of HTSD linear roller guide, a comparison is made between the experimental result and the theoretical calculation and an analysis is made on possible causes that would result in fluctuation of friction of the guide.

文章对HTSD直线滚动导轨副的动态摩擦力波动进行了实验研究，并将实验结果与理论计算进行了比较，分析了引起导轨副摩擦力波动的可能原因。

Through comparisons and analyzing of a large amount of cases, the dynamic friction characteristics between slide guide and rail, including the variation tendency of friction with the parameters just like relative displacement、relative velocity、relative acceleration、contact area、lubrication condition and slide guide type, are discussed.

通过分析和比较大量的实验结果，探讨了导靴与导轨之间的摩擦特性，包括摩擦力随相对运动的位移、速度、加速度，以及正压力、润滑状况和导靴类型等参数的变化情况，为进一步的研究工作提供实验基础。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。