提高机械设计的质量，合理选择设计参数，不仅需要进行强度设计，而且需要进行摩擦学设计。
In improvement of machine design and reasonable selection of design parameters not only strength design but tribology design as well are required.
振动使土壤的抗剪强度下降是切削阻力下降的主要原因，同时，铲斗与土壤间摩擦力和粘附力下降，也是切削阻力下降的原因之一。
The main reason is that the cutting intension of soil reduced due to vibrating, and another one is the deducing of friction between bucket and soil.
结果表明，随着石墨添加量的增加，复合材料的抗拉强度和伸长率逐渐下降，硬度逐渐上升，摩擦系数逐渐变大。
It shows that the composites' tensile strength and elongation decrease while the hardness and friction coefficient increase with the addition content of graphite.
具有结构先进，密封性好，抗拉强度高，耐腐蚀，高弹性，自润滑性能好，摩擦系数低等特点。
This product possess advanced structure, good sealing performance, high tensile strength, corrosion-resisting, good elasticity, good self-lubricating character, small friction coefficient, etc.
实验发现通过等离子体处理后，纤维表面摩擦系数、断裂强度、断裂伸长率以及润湿性等性能都有了明显变化。
It was found that the friction coefficient, break strength, elongation at break and the surface hydrophilicity of PPS fiber had changed after the modification.
反射裂缝裂尖位于面层中且裂缝长度大于某一值时，应力强度因子随着摩擦系数的增加而减小。
The SIF decreases with the friction coefficient rising when the surface crack tip lies in the base and the reflective crack length is more than a certain value.
他们结合了多项高刚度的机械强度和负担得起良好的弹性性能，高韧性，尺寸稳定性和良好的滑动摩擦性能。
They combine high rigidity with mechanical strength and afford good elastic properties, high toughness, dimensional stability and excellent sliding friction properties.
试验表明，压实度、压实含水量及土体饱和状态对粘聚力和内摩擦角有影响，从而使抗剪强度也受到三因素的影响。
Results show that degree of compaction, compaction water content and saturation state of compacted soil have influence on cohesion and Angle of friction of clay, thereby on the shear strength of clay.
这种偶联剂使复合材料的抗冲击强度明显提高、硬度降低、耐磨性有较大的提高而摩擦系数略有降低。
The coupling agent can evidently increase impact strength of the composite. Coupling agent, lower the hardness and friction coefficient o…
对深部黏土重塑土的常规三轴试验表明，其内摩擦角较一般浅层黏土低，而且在高围压下强度包线出现向下的转折。
Triaxial compression test with the remolded deep clay shows that its fraction Angle is lower than that of the common shallow clay, and the strength envelope deflects with high confining stress.
在此基础上，进行了内燃机曲轴—轴承系统摩擦学、刚度和强度的耦合研究。
Then, the coupling of tribology, stiffness and strength of crankshaft-bearing system for internal combustion engine is studied.
每个滤袋间一金属条固定，增加强度，并防止滤袋于高风速时，因风切之摩擦力而破裂。
Between each pocket there is a metal stick to make frame firm and strengthened, and avoid the breaking because of friction under the high air velocity.
结构陶瓷具有高强度、耐高温和耐磨蚀等优点，作为摩擦学部件已得到广泛的应用。
Structural ceramics possess such features as high strength, resistance to high temperature, high erosion-abrasion resistance, so structural ceramics are widely used as tribological parts.
无论何种试验加载方式，冻结粘土的剪切强度都与围压关系不大，只随着温度的降低而增大，而内摩擦角则有随着温度的降低而减小的趋势。
Although the shear strength of frozen clay is only increasing with the temperature decreasing, there is a tendency that the angle of internal friction is dropping with the lowering of temperature.
直接剪切试验更准确地模拟了垃圾团间的滑动摩擦特性，用直接剪切试验确定垃圾土的强度参数更合理；
The direct shear tests are more accurate in simulating friction behavior between blocks of solid waste feasible to determine the strength parameters of solid waste.
峰值强度、残余强度与围压回归得到的摩擦系数大致相当，黏聚力则减低54.4%。
The friction factor obtained from the regression analyses of the peak strength, residual strength and confining pressure are roughly equal and the cohesion is reduced by 54.4%.
研究结果表明：垃圾土的强度包线可以用双线强度包线来表达，黏聚力和内摩擦角取决于是否填埋碾压；
The results show that envelop of solid waste can be simulated by double lines, and that the cohesion and friction angle are dependent upon whether or not the solid waste is rolled.
而处于研磨阶段时，轴向压力、扭矩和试样弹性模量、黏聚力及内摩擦角有关，与抗压强度无关。
When the sample is at the stage of grinding damage, the axial force and torque are related to the Young? S modulus, cohesion and internal friction Angle except the compression strength.
试验中间测定了涂层的密度，硬度，抗 弯强度，结合 强度以及摩擦学特性，并着重探讨了实用性。
The density, hardness, bending strength, adhesive strength and ttibogy characteristic of the coating are measured in the test and the practical value is studied.
试验中间测定了涂层的密度，硬度，抗 弯强度，结合 强度以及摩擦学特性，并着重探讨了实用性。
The density, hardness, bending strength, adhesive strength and ttibogy characteristic of the coating are measured in the test and the practical value is studied.
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