Another factor that affects the mass measurements is the frication effects on the beam movement . 另一个影响质量测量的因素是横梁运动时的摩擦作用。
2.
What is lubrication for ? it is for reducing frication 为什么窑进行润滑？这是为了减少摩擦。
3.
Electrochemical study of the frication of polypyrrole on patterned l - cysteine c2h6s2 self - assembled mixed monolayers 二硫醇混合自组装膜修饰电极制备的电化学研究
4.
Machinery can product higt precisely and stably . all the machine parts and components are made by adopting the hith quality material , strong struction , durative lubricative system to make the machine working smoothly and decrease the frication damage 全部机器采用优质材料，结构坚固，强制润滑系统使机器运转顺利并且可十分有效地减少磨损。
5.
This method is of high reliability and efficiency . it ' s regarded the one of the best designing method nowadays . to choose the best parameter of frication piece and make sure that the cloth ' s mechanical function is the aim of friction piece ' s parameter priority 为了圆满解决上述两个问题，本文采用广义既约梯度法对摩擦片参数、变速器传动比及变速器二轴六档齿轮进行了优化设计，该算法可靠性和效率都很高，是目前公认最为优秀的优化方法之一。
6.
Whether it or not to improve the lubrication and dynamic performance of gear , at the same time to realize a " green lubrication " type of gear transmission of low cost , energy saving and easy maintenance by means of making use of the frication material ' s lubrication performance and meshed medium ' s elastic deformation 能不能研究一种利用摩擦副材料的摩擦润滑特性和啮合介质的弹性变形，实现既能改善齿轮的润滑和动态特性的效果，又能实现低成本、节能、易维护的绿色润滑齿轮传动？
7.
When the width of the foundation is smaller , the friction force is firstly increased from zero at the central area of the foundation , then decreased to zero at the edges of the foundation , hence there is a peak ; when the width of the foundation and the thickness of the soft ground is larger , the frication force is almost zero from the central area of the foundation to a certain distance , then increased , at last decreased to zero at the edges of the foundation , therefore there is a peak ; and when the width of the foundation is larger and the thickness of the soft ground is smaller , the friction force is firstly increased from zero at the central area of the foundation in the negative direction , then decreased to zero , so there is a negative peak , then increases in the positive direction , eventually decreased to zero at the edges of the foundation , hence there is a positive peak 当基础宽度较小时，从中心线为零处开始增加，达到峰值后，开始减小，直至基底边缘处为零；当基础宽度和软土地基厚度较大时，从中心线处开始，向外侧延伸一定距离，几乎为零，然后开始增加，达到峰值后，开始减小，直至基底边缘处为零；当基础宽度较大，并且软土地基厚度较小时，从中心线为零处开始反向增加，达到反向峰值后，然后反向减小，减小到零后，逐渐正向增加，达到峰值后，再逐渐减小，直至基底边缘处为零。
8.
Material is transported forward in the absolute sliding way driven directly by frication force . some contents of this paper are below : one of them to establish whole machine model , study the theory of transportation and analyze the dynamic characteristics . a numerical calculation method is put forward to solve the theory of material transportation 通过对输送机实际工作状况及工作机理的分析，建立了输送机整机模型及力学模型，对其进行力学和运动分析，建立动力学方程，提出了一种判断式数值求解方法，研究了运行的输送机理
