查询词典 friction coefficient

ABSTRACT Based on theoretical analysis of axial compression of ring-shape specimen between two flat dies by an upper-bound technique,it is possible to carry out the measurement of both the friction coefficient of lubricant and the basic flow stress of the ring material under particular temperature and strain rate.

摘 要 根据圆环压缩的连续速度场上限定理的理论分析，通过圆环试样压缩前后的几何尺寸的变化，能测量润滑剂的摩擦因数和圆环材料的流变应力。

Boron carbide,friction coefficient,wear rate,tribochemical reaction

碳化硼-碳化硼摩擦副的摩擦磨损特性研究。

According to this point it has good ability to absorb neutron and resist eradiation.Because of their high hardness and strength, excellent wear and corrosion, low density, low friction coefficient good self-lubricate and high temperature properties both silicon carbide and boron carbide components have been widely used in many industries.

由于碳化硼中的B14中子缺失，它还具有较大的热中子俘获截面，具有极好的中子吸收和抗辐射性能，由于其具有耐高温，耐酸碱腐蚀，高强度，高化学稳定性，比重轻，半导体等特点而成为众多行业的首选材料。

Single-crystal ; mode analysis ; one class resonant frequency ; dynamic friction coefficient

单晶硅；模态分析；一阶谐振频率；动态摩擦系数

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。

The effect of friction coefficient between particles on the intensity was compared and discussed.

结果表明了颗粒介质之间的咬合作用对材料的宏观力学行为有比较明显的影响。

It is the high surface energy that contributed to larger friction coefficient of polyurethane threads.

高表面能引起的粘着为聚氨酯摩擦系数较高的主要原因。

A method of friction coefficient measurement in metal forming was designed.

设计了一种针对金属材料成型中摩擦系数测定的实验方法。

Results showed that after the addition of graphite the friction coefficient of composites decreased and the wear resistance increased by 170 to 340 times.

结果表明，随着石墨的加入，复合材料的摩擦系数降低，磨损抗力提高170~340倍。

Hardness and friction coefficient of the three composites were determined to investigate the influence of particle type and content.

研究了颗粒性质和含量对复合材料硬度、摩擦系数和耐磨性能的影响。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。