查询词典 friction coefficient

With the increase of temperature, the friction coefficient of the composition materials increased and the wear rate of the composition materials decreased.PPTA pulps in the friction materials overcome the shortcoming of asbestos that has high wear rate at high temperature.

结果表明，3种芳纶浆粕增强的摩擦材料都具有优良的摩擦磨损性能，特别是随着温度升高，摩擦系数有较大提高的同时，磨损率明显下降，克服了石棉增强的摩擦材料在较高温度下磨损率较大的缺点。

The results of the friction and wear test show that this SAM can decrease the friction coefficient of the substrate significantly.

有机氟材料的表面自由能低，具有很高的疏水－疏油性和较低的摩擦系数，广泛应用于许多领域。

The results of friction and wear test showed that this wearable composite has lower wear rating, but has bigger friction coefficient.

通过对材料进行摩擦磨损试验，结果表面该耐磨复合材料的磨损率较小，但摩擦系数偏大。

The different friction coefficient between tube and die is one of the important influences in tube hydroforming. Reduce the friction as possible, it can not only benefit to tube forming, but also reduce axial force effectively.

不同的管坯和模具之间的摩擦系数也是影响管坯成形的重要影响因素之一，要尽量减少摩擦，不仅有利于管坯的成形，还能有效地减小轴向力。

The results shoW that,both Si02 and mullite can be as friction additive,the friction coefficient and wear rate of counterpart incr......

在摩擦组元含量相同的情况下，添加莫来石的摩擦材料的摩擦系数、磨损量、对偶件的磨损量均比添加SiO2者要高。

Laser-textured specimens exhibited lower and stable friction coefficient as compared with untextured specimens under dry friction. The textured surfaces also exhibited lower wear rate than that of untextured specimens. It was found that micro-dimples acted as traps for wear debris, and hence decreased abrasive wear.

在相同试验条件下与未织构面对比，织构面的摩擦系数均有不同程度减小且表现得更为稳定，并且磨损率也得到一定的降低，这是由于所制备的表面微坑起到了捕获磨屑的作用。

Pitch circle diameter: d = mz = 3X12 = 36 Tooth crown heights: ha = m (f0 + x)= 3X (l +0.5)= 4.5 Tooth High: hf = m (f0 + cx)= 3X (l +0.25-0.5)= 2.25 Tooth full height: h = ha + hf = 4.5 +2.25 = 6.75 Addendum circle Chemical pumps diameter: Da = d +2 ha = 36 +2 X4.5 = 45 Fixed string tooth thickness: Sxn = m (π/ 2 * cos2a + xsin2a)= 3X (1.387 +0.6428 X0.5)= 5.125 Fixed string of high gear tooth thickness measurement: hxn = m (π/ 8 * sin2a + xsin2a)= 3X (0.7476X0.117X0.5)= 2.42 Modulus coefficient x0.5 m3 O20 ° pressure angle tooth thickness Sxn5.12 fixed string Addendum Coefficient string f1 fixed gear tooth thickness measurement most high hxn2.42 Teeth z12 2, shaft wear and tear maintenance: Axis gear pump wear is mainly because with the support roller shaft at both ends between the friction and wear, so that smaller shaft diameter.

分度圆直径：d=mz=3X12=36 齿顶高：ha=m（f0+x）=3X（l+0.5）=4.5 齿根高：hf=m（f0+c-x）=3X（l+0.25-0.5）=2.25 齿全高：h=ha+hf=4.5+2.25=6.75 齿顶圆直径：Da=d+2ha=36+2X4.5=45 固定弦齿厚：Sxn=m（π/2*cos2a+xsin2a）=3X（1.387+0.6428X0.5）=5.125 固定弦齿厚测量用齿高：hxn=m（π/8*sin2a+xsin2a）=3X（0.7476X0.117X0.5）=2.42 模数m3变位系数x0.5 齿形角o20°固定弦齿厚Sxn5.12 齿顶高系数f1固定弦齿厚测最齿高hxn2.42 齿数z12 2、轴的磨损维修：齿轮泵中轴的磨损主要是因为轴两端与支撑滚针间的摩擦磨损，使轴径变小。

The angular distribution of the transmission coefficient of HH polarization are obtained by numerical implementation, the influence of the permittivity and the mean layer thickness of intermediate medium, friction velocity and the frequency of the incident wave on the transmission coefficient is discussed.

通过数值计算得到了HH极化透射系数随散射角的变化曲线，讨论了中间介质介电常数和厚度、摩擦风速和入射波频率对透射系数的影响，得到改进的一维分形分层海面透射系数的基本特征、分区特征和随频率变化的特征，结果表明透射系数近似具有"量子化"特征。

The friction coefficient and wear coefficient of resin depended on the content of hardener and independent the content of active dilution.

实验中发现，线性酚醛环氧树脂固化物的摩擦磨损性能与固化剂的结构和用量紧密相关，低于理论计算用量的固化剂与线性酚醛环氧树脂生成的固化物具有更低的摩擦系数和更强的抵抗磨损的能力。

As a test problem, the steady flow fields and hydrodynamic forces of a 6:1 prolate ellipsoid at different incidence angle are computed. Computed results including surface pressure coefficient, surface friction coefficient, and body hydrodynamic coefficients, are compared with experimental and numerical ones of published papers, the agreement is satisfactory.

作为算例之一，给出了6：1椭球体在不同攻角下定常流场和水动力的数值计算结果，包括物体表面的压强系数、切应力系数的分布及物体所受升力系数、阻力系数和力矩系数随攻角的变化规律，并与国外文献的计算和实验结果进行了比较，符合程度令人满意。

He tendered his resignation to the Prime Minister.

他向首相递了辞呈。不适合

International economy and trade,Nanking 210044

国际经济与贸易，南京 210044