摩擦

As to the pumps with middle and low aspect ratio which are extensively used, the disk friction losses dissipate large proportion of the craft power. Reducing this kind of loss will improve the efficiency effectively.

对于工程实际中经常使用的中、低比转数离心泵，圆盘摩擦损失在轴功率中所占比例较大，因此降低圆盘摩擦损失对提高泵效率具有显著影响。

Average friction factor of standard friction materials.

3该摩擦系数为配套摩擦材料的平均值。

The model was validated by the test data of the friction factor acquired from a high speed friction test bench.

采用高速摩擦试验台得到摩擦系数的试验数据，验证了模型的合理性。

According to the integral equations of pipe flow, the relationship between the friction factor and the log-law was approached, as well as the effects of low Reynolds number on the relation of friction factor.

利用管流的积分方程，深入探讨了摩擦系数关系式的系数和对数定律常数之间的关系，进一步分析了低雷诺数对摩擦系数关系式的影响。

Mathematical model and transfer function of electro-hydraulic control system of Friction Welding Machine are established.

建立了线性摩擦焊机电液伺服振动系统的数学模型和传递函数，采用Matlab/Simulink软件对其进行了动态仿真分析，特别是对谐振振动系统原理及效果进行了深入分析，以初步验证线性摩擦焊机电液伺服振动系统性能。

A wear tester with water lubrication was used to test the friction behavior of powder reinforced paint.

利用摩擦磨损试验机，进行清水润滑条件下的摩擦磨损试验。

The experimental results indicate that friction coefficient of the Cu-MoS2 powder met...

研究结果表明：在有电流条件下，加入MoS2可显著降低铜基粉末冶金/铬青铜配副的摩擦因数和铜基粉末冶金材料磨损率，10%和20%MoS2含量的粉末冶金试样的磨损率相差不显著，20%MoS2含量的摩擦因数在高速时有所增加。

The basic requirements and characters of powder metallurgy friction material for airplane were reviewed, and the selection of the friction material for Boeing-737 airplane was studied by weighted analysis.

综述了飞机用粉末冶金摩擦材料最基本的功能要求和特点，并采用加权分析对Boeing-737飞机用摩擦材料的选择进行了研究。

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。

PTFE. friction and wear. metal powder. dry sliding contact.

PTFE，摩擦磨损，金属颗粒，干摩擦

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。