1·The stem seal of a feed water control valve uses expanded graphite packing in order to produce friction and to economize on energy for the control valve working.
电站锅炉给水调节阀的阀杆密封采用柔性石墨填料，既降低了摩擦力，又为调节阀的运行节约了能源。
2·Under normal conditions, rocks composed of clay produce far less friction than do other rock types.
在正常情况下，由粘土组成的岩石产生的摩擦要比其他类型的岩石小得多。
3·Early pericarditis may also produce a friction thrill.
早期心包炎也会产生一种摩擦性震颤。
4·The magic fiber is special for BMW, with remarkable non-slip effect, especially when contact with the vehicle carpet can produce enough friction for good attachment.
宝马专用车毯魔力纤维底布，防滑效果显著，与车底毯接触时，可产生足以让地毯纹丝不动的磨擦力，贴服性好。
5·The purpose of this design is to produce stable friction with and reduce viscosity.
这样设计是为了让中块下部产生支撑，上部空缺的部位依靠中盖来支撑。