查询词典 static friction coefficient

By making use of multi-points backward pressure of one dry gas well, this paper introduces how to confirm dynamic friction coefficient of downhole tubing at the exact moment through stable testing material, gives the productivity and the corresponding bottom hole pressure by using productivity equation, calculates wellhead pressure in combination with dynamic friction coefficient of tubing, establishes the correct wellhead outflow performance equation for this well, draws out wellhead outflow performance curve and discusses how wellhead outflow performance equation or wellhead outflow performance curve changes with the decrease of formation pressure or the change of wellhead outflow performance curve.

借助1口干气井的多点回压法试井资料，介绍了如何利用气井稳定试井资料，确定该气井此时此刻井下油管动态摩阻系数；利用产能方程给出产量和对应的井底压力，结合油管动态摩阻系数计算井口压力，建立该井准确的井口流出动态方程并编绘井口流出动态曲线；讨论了随着地层压力递减和井下油管动态摩阻系数变化规律，井口流出动态方程或井口流出动态曲线的变化规律。

The value of the stable friction coefficient is equal to the average value of the friction coefficient of matrix and reinforcement.

在摩擦试验的最初阶段，复合材料的摩擦系数随摩擦的进行而降低，并在一定的摩擦距离以后趋于稳定。

The correlation test on pressure, speed and temperature of brake friction coefficient are performed, the results indicate that the stability of friction coefficient is enough.

按照制动标准VW TL 110规定的试验程序，进行了制动衬片摩擦系数的压力、速度、温度相关性试验，试验结果表明，制动摩擦系数随压力、速度、温度的变化范围在规定的离散带范围内，摩擦系数的稳定性是符合要求的。

The protective film decreased the surface roughness, and also increaser the friction coefficient in the process BTA absorbed on SiO2 polishing particle surfaces, which decreased the friction coefficient in the polishing process caused by the particles.

另外，BTA对成SiO2抛光磨粒具有一定的吸附作用，进而对抛光效果产生一定的影响，抛光磨粒表面吸附层的存在会减小抛光过程中的摩擦系数。

Road friction coefficient and roller friction coefficient are necessary.

精确地测量制动实验台滚筒的附着系数和开发相应的检测设备是非常有意义的。

The friction coefficient of the samples with low density of composite A increase with the prolonging of test time, while the samples with high density remain stable; the friction coefficient of the samples with low density of composite B exhibit ruleless results with the increase of load, while the samples with high density remain stable, too.

随时间延长， A 材料低密度试样摩擦系数升高，高密度试样的保持稳定； B 材料低密度试样的变化不规律，高密度试样能基本保持稳定。

This layer coating the friction coefficient is extremely small, the existing solid matter in the friction coefficient of the lowest kind.

这一层涂层的摩擦系数非常小，现有的固体物质摩擦的系数最低的一种。

The test result showed , the friction coefficient and wear coefficient of neat novolac epoxy would decrease with the content of hardener decrease at unlubricated sliding friction condition.

对制备的无填充树脂和石墨填充树脂固化物的无润滑滑动摩擦磨损性能进行了系统的研究，获得了具有理想摩擦系数和磨损系数的复合物涂层。

Meanwhile, metal powders of Cu and Pb decrease the friction coefficient of PTFE composites, but Ni powder increases the friction coefficient.

金属填料Cu及Pb降低了PTFE复合材料的摩擦系数，Ni则增大了复合材料的摩擦系数；Cu的减磨效果最好，而Pb的减磨效果则最差。

And the friction coefficient of the rub has a good effect on the absorber effect of the system too. A large friction coefficient can make the system to work more steadily.

碰摩摩擦系数对系统的减振同样有很好的效果，较大的摩擦系数能够使系统更平稳地工作。

That snake Alaric named Archbishop...

庇护。。。那个毒如蛇蝎的Alaric被命名为大教主。。。

You have done lots of magical things to be amazed at.

你做了很多神奇的事物感到惊讶。