1) the rate of friction change
摩擦因数变化率
2) friction factor
摩擦因数
1.
Study of finite-element simulation of influence of friction factor on expandable casing;
摩擦因数对膨胀套管影响的有限元模拟研究
2.
Calculation of friction factor for the turbulent flow in straight and circular pipe;
圆形直管内湍动流体的摩擦因数计算
3.
Calculation Method for Friction Factor of Pipe;
计算管路摩擦因数的便捷方法
3) friction coefficient
摩擦因数
1.
Prediction model for friction coefficient of resin-based friction materials based on neural network;
基于神经网络的树脂基摩擦材料摩擦因数的预测模型
2.
Discussion of influence factors on viscose/pupa protein filament′s friction coefficient;
蛹蛋白粘胶长丝摩擦因数的影响因素探讨
3.
Friction and friction coefficient for aluminium alloy extrusion;
铝合金挤压时的摩擦与摩擦因数
4) Frictional Coefficient
摩擦因数
1.
The experimental results indicate that the frictional coefficient of PCrMo steel is decreased as the slide-speed is increased,and it is increased as the contact pressure is increased.
结果表明:摩擦因数随着载荷的增加而增加,随着滑动速度的增加而减小;磨损率随着载荷的增加而增加,随着滑动速度的增加先增加而后降低。
2.
Its prospect is revealed through the comparative tests on the physical properties and the processibility of SSBR,ESBR and BR,the frictional coefficient of their compounds and the tread life of their tires.
通过ＳＳＢＲ与乳聚丁苯橡胶、ＢＲ的物理性能、加工性能以及胶料的摩擦因数等方面的对比试验和轮胎实际里程对比试验，揭示了ＳＳＢＲ在轮胎中的应用前景。
3.
The problem is that it is hard to confirm the frictional coefficient b.
为确保设计的阀板驱动机构能在阀门全关状态下顺利打开阀门,必须较准确地计算出阀门与阀座之间的摩擦力,而阀门与阀座的摩擦因数难以确定。
5) frictional factor
摩擦因数
1.
By the use of metal belt typed step-less variator manufactured with self-contained design,an experimental research was carried out on the frictional factor and transmission efficiency of metal belt transmission.
用自主设计制造的金属带式无级变速器,对金属带传动的摩擦因数和传动效率进行了实验研究。
2.
Frictional factors of three sets of dies made of different materials as well as four samples of dif-ferent ma terials are measured with the designed equipment under two different conditions of dry friction and with special stamp ing cleaning and rust-proof oil respectively.
设计了测试覆盖件模具摩擦因数和拉延筋约束阻力的试验装置。
3.
An oscillatoutype tribometer developed byourselves was used to determine the frictional factor and to differentiate the lubricating mode forthree kinds of bio-compatible polymer(i.
用自行研制的振子式磨擦仪观测了生物相容性较好的3种聚合物材料，即硅橡胶、聚氨酯、聚乙烯醇水凝胶（PVA-H）的摩擦因数和润滑制度。
6) coefficient of friction
摩擦因数
1.
The influences of normal load,rubbing time and pv value on the coefficient of friction were studied,as well as the effect of friction frequency on the wear loss of the stationary specimen.
以三维网络SiC陶瓷/Fe-Cu合金复合材料作为静片、三维网络SiC陶瓷/40Cr复合材料作为动片,研究了法向载荷、摩擦时间和pv值对该材料体系摩擦因数的影响以及摩擦次数对静片磨损量的影响,并采用金相显微镜观察了复合材料的显微结构和磨损表面形貌,分析了材料的摩擦磨损性能和磨损机理。
2.
With the developed testing system,the parameters such as friction force,load,temperature and coefficient of friction can be on-line measured during the tests.
该系统在无人操作的情况下可连续检测、计算并存储试验过程的摩擦力、载荷、摩擦因数和温度,且试验机改造前后对比试验结果表明,本系统的试验数据是可靠的且测试精度和重复性得到了提高。
3.
From analysis of the test results the conclusions can be obtained as follow: the coefficient of friction under line contact is same as under point contact.
研究表明:线接触微动摩擦因数变化与点接触形式相同;位移幅值在部分滑移区时,表面粗糙度对表面磨损有影响。
补充资料：电容率与损耗因数试验
电容率与损耗因数试验
test for permittivity and dissipation factor
铝或金、导电橡皮等。在高频下只能采用前两者。用不接触电极时，材料表面不需贴涂电极。 测试技术 (1)测量方法与仪器的选择:按材料的性能、测量频率与所需的侧量准确度选择。 (2)边缘电容的校正:应用三电极时，用等效面积(板状试样)或等效长度(管状试样)计算相对电容率。应用二电极时，用经验公式修正边缘效应，如测微电极，此时不需作边缘电容的校正。 (3)温度、湿度影响的消除:测试前作试样的预处理。测试在标准条件下进行。 (4)电场干扰的消除:对连线、检测器和试品采用完善的屏蔽，接地点应选择合适，接地应良好。_Nl__1Cx一瓦CN’tg6一函乙石茹 这种电桥的灵敏度和准确度较高。一般用作精密的、量程范围较大的校正测量。 (3)用四电容电桥进行测量。该电桥的诸桥臂主要由电容构成，可较准确地测试tg占较小的绝缘材料。 谐振法在高频电压下进行侧量的一种方法。试 ___样电容用替代法测量;损vof们人c7，cx厂认几Uv〔V 图3谐振法测量线路C二、R、一试样并联电容与电阻;L一谐振线圈;〔升谐振电容;V一一高频电压表;E一高频 电源耗因数常用变Q值法〔接线见图3(a)]和变电纳法[接线见图3(b)〕测量。 (1)电容C、的测量。在有试样和无试样两种情况下，发生谐振时调谐电容c的差值△C来求取C二，即Cx一△(少~CZ一已。式中G、Cl分别为无试样与有试样谐振时，调谐电容的读数。 (2)损耗因数tga的测量。①用变Q值法口设Ql和QZ分别为有及无试样下，电路发生谐振时的Q值，则 C。十C。/11)tg。一一瓦尸戈可一瓦)式中C。为无试样时的谐振电容;C0为谐振电容以外的零电容。②用变电纳法。测量有及无试样两种情况下失谐到半功率点时谐振曲线的宽度△口和△CZ求取，即tg占一△C工一△CZ ZC、式中C:为无试样时的谐振电容口 损耗角直测法基本原理是将流过试品的电流信号与由高压标准电容器或其他采样元件所取得的试品两端的电压信号用相位比较器进行比较，利用脉冲计数法测出两者的相位差少，然后根据甲二(二/2)一占算出试品的介质损耗角a，进而得到tga。由于测试中避免了调节电桥平衡的复杂过程，因而在电气设备在线连续监测中十分有利，但准确度较差。 绝缘材料试样与电极 (1)试样:根据材料类型有平板、薄膜、管状三种。 (2)电极系统:有二电极系统与三电极系统。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条