查询词典 friction

After the analyses of the force about different shape of caterpillar thorn, it was considered that the drive force of caterpillar tractor consisted of friction force, extruding and cutting force, edge cutting force and thorn friction force.

一般认为，拖拉机在田间行驶时，切线牵弓l力是由土壤抗剪力产生的，其计算公式通过土壤剪切力导出11·2}。这一观点忽略了其它一些因素的影响，并且只适用于直板式履刺。

Scene data indicate that in the process of actual making the casing into the Horizontal Well ,people used to reduce friction coefficient between the stratum and the Casing, Change the friction type between the casing and the wall,use special casing and centralizer with oriented ring, even join the slurry in the internal casing in order to increase self-casing, etc.

现场资料表明，在实际套管下入过程中，人们往往采用的是减小套管与井壁之间的摩擦系数、改变套管与井壁间的摩擦类型，使用带有导向环的套管和扶正器，甚至在套管内部加入泥浆，以增加套管自重等方法，但这些方法并没有改变套管下入驱动力减少的现实，不能从根本上解决套管下入困难的问题。

Since the force of friction and the velocity of a particle are directed oppositely, then the work of the force of friction on each part of the path is negative:Therefore, the work along any closed path will also be negative.

因为摩擦力量和微粒的速度直接反对，然后摩擦力量的工作在道路的每个零件的是消极的：所以，沿所有闭合的道路的工作也将是消极的。

Typically service brakes are concerned with dynamic coefficient of friction, or the coefficient of friction measured while the vehicle is moving.

典型工作条件下的刹车与动摩擦因数，即当车辆行驶时测出的摩擦因数有关。

Because of the small difference between the static friction coefficient and the dynamic friction coefficient of DF-5S slide, it avoids the squirming phenomenon in the restarting-up process efficiently and lowers the severe wear in the restarting-up process.

由于DF-5S铜基镶嵌滑块的动静摩擦系数的差值小，有效地避免了启动过程中的蠕动爬行现象的发生，降低了启动过程中的剧烈磨损。

My main production TSF Academy Soft Machine Tool belt and matching adhesive used primarily for machine tool guideways, abrasion resistance, static and dynamic friction coefficient of the difference small, not crawling, positioning accuracy, and has enough anti-aging and physical properties of mechanical is to improve the machining precision, extended service life Guide the best choice, the products applicable to all types of machinery and equipment manufacturing friction vice and maintenance.

我院主要生产TSF机床导轨软带与配套使用的胶粘剂，主要用于机床导轨，抗磨损，静动磨擦系数差值小，不爬行，定位准确，并具有耐老化和足够的机械物理性能，是提高机床加工精度，，延长导轨副使用寿命的最好选择，本产品适用于各类机械设备磨擦副的制造与维修。

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。

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 other type of friction has a kinetic coefficient of friction wh....

相对的，有些校舍在柱两侧配置适当的壁体，形成所谓翼墙柱。。。。

Viscosity lower coefficient of friction small, can effectively reduce the mechanical operation of friction, easy to clean.

粘度较低、摩擦系数小，能有效地减少机械运行的摩擦阻力，容易清洗。

As of Tuesday, Google's results were still censored in China.

截至周二，谷歌的搜索结果仍受中国审查。

In order to make the positive action increase and negative one decrease, the sub-forces of the social factors must be adjusted to form a centripetal force.

在这一过程中，人的主体性发挥是社会有机体健康发展的灵魂。