The viscosity of the liquid medium reflects the ease of mobility, high viscosity, friction will increase, reducing output power, a waste of energy and have a high temperature.
液体的粘度反映了介质流动的难易程度，粘度过高会增加内摩擦阻力，降低输出功率，浪费能量，并产生过高的系统温度。
Viscous friction is the fiction, or resistance to relative motion, between adjacent layers of liquid. The resistance of motion between these oil layers is called viscous friction.
粘性是液体流层问相对运动而产生的摩擦力或阻力。油层间所产生的运动阻力称为粘性摩擦力。
The article focuses on two ways to determine friction factors of the capliliary tube without backheating which inlet refrigerant is subcooling liquid.
本文针对无回热且进口处制冷剂为过冷液体的节流管介绍确定其沿程阻力系数的两种方法。
Analyses parameter have inclined Angle, pipe diameter size, gas liquid ratio and friction factor and so on.
分析参数有：倾斜角度、管径大小、气液比和摩阻系数等。
The pressure head of the liquid will decrease due to the friction on the surface of pipes when it flows through the pipes.
流体流经管道时，由于管道表面的摩擦力而产生力头损失。
The results indicated that the organic Mo additives exhibit excellent anti-wear, friction-reduction properties and good extreme pressure property than liquid paraffin.
试验结果表明：两种有机钼添加剂均具有优异的抗磨减摩性能和极好的承载能力。
The synthesis of 2,5-disubstituted-1,3,4-thiadiazoles and their applications in corrosion resistance, anti-friction, liquid crystals, pesticides, pharmaceuticals, and chemical analysis were reviewed.
本文主要论述2，5-二取代-1，3，4-噻二唑类化合物的合成及其在抗腐蚀、抗磨擦、液晶、农药、医药、分析化学等方面的应用。
The synthesis of 2,5-disubstituted-1,3,4-thiadiazoles and their applications in corrosion resistance, anti-friction, liquid crystals, pesticides, pharmaceuticals, and chemical analysis were reviewed.
本文主要论述2，5-二取代-1，3，4-噻二唑类化合物的合成及其在抗腐蚀、抗磨擦、液晶、农药、医药、分析化学等方面的应用。
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